Heritage, Volume 6, Issue 4 (April 2023) – 25 articles

In the last few years, blockchain technology and NFTs have been the subject of much research in different sectors ranging from informatics, to medicine, to economics. Although it is most often associated with cryptocurrencies, due to its features of immutability and durability, this technology has found its place in various fields, including GLAM institutions. This article will review the literature from 2017 to 2022 dealing with blockchain and NFTs in the heritage sector. Topics covered, proposed models, and projects will be highlighted. Archives are currently leading the research into the use of blockchain technology and have already developed models such as TrustChain. However, libraries, museums, and galleries are also beginning to show an interest in the new technology and its potential benefits. Therefore, we also approached the GLAM sector as a whole, to emphasize the importance of the joint development on the advancement of shared approaches and protocols in utilizing blockchain technology to enhance the trustworthy management and preservation of digital resources. This is particularly important because GLAM institutions care for a shared heritage and serve a common audience. In the second part of the article we will discuss the proposed uses of the technology and highlight still unexplored topics that should be elaborated in further research. The aim of this paper is to make a synthesis of previous research and bring the potential of blockchain technology and NFTs closer to experts in the heritage field, given that they are still quite unknown. Full article

The River Vero canyon (Huesca, Spain) contains an exceptional archaeological legacy with more than sixty rock shelters with cave paintings and forms part of the World Heritage ‘Rock Art of the Mediterranean Basin on the Iberian Peninsula’. This study presents the results of the in situ and non-destructive multi-elemental composition analysis of the pigments used in eight of the main shelters through portable X-ray fluorescence spectroscopy (pXRF). Specifically, the cave paintings of the rock shelters of Chimiachas, Muriecho, and Arpán (Levantine Art); and Mallata, Barfaluy, Quizans, Lecina Superior, and Forau del Cocho (Schematic Art) were investigated. The red pigments, based on iron minerals, were the most abundant in all the River Vero rock shelters, with Fe contents in the 0.51–3.06% range. The iron contents of the paintings of Mallata B1 and I, Muriecho, and Forau del Cocho were higher than those of Arpán, Barfaluy, Lecina, and Chimiachas rock-shelters; and, in turn, these were higher than those of Quizans, pointing to noticeable differences in the degree of conservation. Black pigments, in the absence of manganese, were associated with bone char or carbon black. Through the phosphorus content, evidence is provided of the use of bone phosphates as a component of the paints, either as a filler or as a binder. Geological studies indicate that the detected gypsum is of external origin, probably associated with gypsum-rich atmospheric dust. The reported pXRF analysis of this large set of paintings may serve as a basis for future characterization studies involving other portable chemical analysis techniques. Full article

Every nation has its unique intangible culture that is passed down from generation to generation thanks to what is still alive. Czechia has a rich intangible cultural heritage, e.g., Mardi Gras, Verbuňk dance, blueprints, Christmas-themed beaded decorations, puppetry, etc., which are all on UNESCO’s Intangible Cultural Heritage Lists. However, it also has other traditions, ceremonies, legends, folk tales, and weather lore related to weather forecasting in relation to agriculture. The most popular weather lore is related to the feasts of saints, as the feast’s dates have remained unchanged for a very long time in the calendar. The aim of this study is to bring Czech weather lore, which, even today, in the age of numerical models, has a certain meaning, closer to readers. Some weather lore has been forgotten over time, but most of it still remains in Czech folk traditions, which continue to be spread orally or in written form. We wondered whether young people knew weather lore as part of their cultural heritage. The results of a survey based on a sample of 220 respondents, including students at the University of West Bohemia in Pilsen and future teachers at primary schools, led to the conclusion that weather lore is well-known among the young Czech generation as well. Full article

This simple model, developed by conservators, assists in the challenge of making preventive conservation, housekeeping, and care of historic interiors and collections, physically and economically sustainable, in historic houses welcoming increasing volumes of visitors (a primary source of dust). It introduces objectivity into conservation advice and management decisions: how many collections care staff should each historic house ideally employ, and how large an annual budget is required to fund the non-wage costs of routine preventive and interventive conservation? Are staffing structures rational and consistent, and tailored to the individual and developing circumstances of multiple properties? Eight qualitative and quantitative criteria are each given a score from 1–4 in relation to their data ranges. The total scores for each property are converted to percentages, correlated with staffing structures, and used to estimate the requirements for daily, weekly and annual housekeeping and conservation cleaning. Selected data are used to measure housekeeping performance against weekly targets, and to rationalize the distribution of financial resources for preventive conservation and maintenance. The model can be adapted for use in any museum or heritage building which needs to assess and quantify the routine care of interiors and collections on open display to visitors. Full article

This paper describes the Climate Toolbox—a set of utilities for assessing and comparing real internal climates in terms of hazards they pose to museum collections. The Toolbox is a Microsoft^® Excel^® workbook with complex VBA codes optimised to process large datasets efficiently and quickly. The Toolbox takes user-provided climate data (up to 8000 sets of temperature, T, and relative humidity, rh, data) and characterises the climates in terms of critical parameters for stresses and mechanical damage, risk and magnitude of mould, relative permanence compared to (selectable) reference specifications, the proportion of data lying within and without selectable specification ranges, and the proportion of rh data swings exceeding a given magnitude. The interface is easily customisable, allowing users to input desired specification ranges, insert opening and closing times (to allow for different temperature specifications for periods when a space is open and occupied to when it is closed and empty), selectively change material critical strain parameters, and adjust the cycle periods for stress analysis. Results are summarised in a range of different graphical and tabular outputs and can be processed further to compare and rank spaces for their suitability to house different collections. Full article

The Antonine Wall Distance Sculptures are iconic and unique sculptural reliefs that marked Rome’s most north-westerly frontier across central Scotland. Their inscribed texts and iconography depict graphic tales of frontier life, and recent non-invasive analysis has confirmed they were originally brought to life through vibrant polychromy. This paper tracks the trajectory of one Distance Sculpture that was embedded into the dramatic setting of Dunnottar Castle off the north-east coast of Scotland during the 16th century, where it was recorded as having been repainted during that episode of use. A suite of complementary analytical techniques, including pXRF, FTIR, and SEM/EDS, was recently reported on which identified pigments and surface treatments as well as their chronology of application, confirmed through stratigraphic sequencing visible in cross-section. That approach facilitated the investigation of all episodes in the itinerary of this iconic sculpted relief from the second century to the Scottish Renaissance. That vanguard research has provided an unprecedented opportunity to unravel the rich hidden history behind this unique monumental inscription and re-tell a fascinating transformational tale of a pivotal period in its past. The combination of historical, archaeological, and scientific approaches to an understudied, and overlooked, phenomenon of post-antique colouration is revolutionary in polychromy studies. It provides innovative and well-contextualised information that lifts an aesthetically modest Roman monument into a vibrant, colourful, and sumptuous decorative feature fit to grace the walls of a Renaissance castle emulating Roman imperial practices. We can now trace its journey through time by delving into the detail of its Renaissance repainting to present, for the first time, an accurate digital reconstruction as it performed for 16th century audiences. Full article

Starting from a well defined and demarcated area in space, the Corgo River, in the region of Trás-os-Montes and Alto Douro, this work seeks through Information Technologies (IT), Digital Humanities and online tools and applications (software) to provide digital images of space and water resources, anthropic elements related to water and various natural features. Based on these available resources and a set of historical cartographic documents, we provide a realistic view of the cultural and natural water landscape and how augmented reality can help archaeology interpret this landscape and its historical transformations. Full article

Architectural structures, the basic elements of the urban web, are an aggregation of buildings that have been built at different times, with different materials, and in different styles. Through research, they can be divided into groups that present common morphological attributes and refer to different historical periods with particular social, economic, and cultural characteristics. The identification of these common repeating elements and organizational construction structures leads to the identification of the “type” of the building, which until now has required specialized knowledge, time, and customized proof checking. Recent developments in the field of artificial intelligence (AI) and, more specifically, in deep learning (DL) appear to contribute gradually to the study of the typological evolution of buildings, especially those of cultural heritage (CH). In this paper, we present a deep-learning-based method for the classification of modern Athenian architecture (since 1830) using the YOLO algorithm. This research work can contribute to the digital management of the existing urban building stock, the autonomous large-scale categorization of data that are available from street view images, and the enhancement of the tangible CH. Full article

Roman glass is well studied and known to have been produced from a mineral soda source and calcareous sand with variation between elements relating to naturally occurring minerals in the sands. While the common characteristics of colourants and opacifiers used in opaque and translucent glasses are well understood, the diverse elemental composition of colouring agents associated with the highly specialised, and largely unexplored, technique of enamel-painted glass has never been firmly established. There remains a significant gap in knowledge of pigments used for this technological innovation which is here addressed through the deployment of non-invasive portable X-ray Flourescence (pXRF) analysis and microphotography on a unique Roman enamel-painted gladiator glass from Vindolanda fort. This vanguard research has successfully established, for the first time, a palette of pigments associated with this specialist technique. It is now possible to unravel previously unknown information on complex manufacturing processes and significantly expand the repertoire of the pigments bound up in enamelling recipes used to depict the striking iconographic scenes on the Vindolanda vessel and, potentially, other Roman enamelled glassware. The detection of Cinnabar, Egyptian blue, Orpiment and other pigments are ground-breaking discoveries that will have a transformative impact on early glassmaking studies and push the boundaries of scholarship into new directions of analytical approaches in heritage materials science to complement recent success in this field with Raman spectroscopy and other techniques. The methodology is unprecedented and has been validated through the high quality of the resulting data which permits the extrapolation of elemental compositions of enamelling materials from those associated with the base vessel. This unique approach provides remarkable insights that will revolutionise our understanding of enamelling technologies using the Vindolanda vessel as the investigative platform for forgotten practice. Full article

Thailand’s vernacular and religious architecture is rich and unique. Wat Chedi, a temple in the southern part of the country, is visited by thousands of Buddhists and tourists every month. Despite of its national importance, Wat Chedi is not considered as a historical site and therefore, the site is undervalued. This study aims to assess the value of Wat Chedi’s architectural design and features by proposing a novel point-based criteria based on aesthetic, scientific, educational, and social values. The novel criteria also consider factors such as changes and the respect for changes, which are aligned with the concept of conservation in Southeast Asia. The proposed criteria are then applied to Wat Chedi and to the historic Wat Phra Mahathat Woramahawihan temple, and the results are compared and discussed. The results indicated that whilst Wat Chedi has changed both physically and culturally along with the community and era, it is still a site with significant vernacular architecture and ‘high’ aesthetic, scientific, educational, and social values, whilst the historical value of Wat Chedi is classified as ‘moderate’. Moreover, Wat Chadi’s architecture is proven to be a symbol of people’s spiritual beliefs. It is proposed that the Fine Arts Department of Thailand (and/or relevant agencies) should adopt the criteria proposed in this study to assess other vernacular and religious sites across the country. It also proposed to register Wat Chedi as a valuable intangible cultural heritage site of faith to be preserved for future generations. This article contributes towards developing more efficient tools to assess the vernacular architecture of faith in Southeast Asia, which in turn can help protect important sites for future generations. Full article

This paper focuses on the first investigation of the 19th-century manufacture of red lake pigments obtained from madder by Winsor & Newton (W&N), prominent artists’ colourman at that time. The first approach to their manufacture was carried out by studying the madder entries of the company’s book P1, found in the W&N 19th Century Archive Database. Eleven production records were discovered under names such as Rose Madder, Madder Carmine, Madder Lake and Madder Rose. Three main methods of synthesis were identified and reproduced, revealing three main steps: washing of the madder roots (Rubia tinctorum L.); extraction in acid media and complexation with Al³⁺ using alum; and precipitation by the addition of salts such as ammonium carbonate and sodium borate. The syntheses were followed by UV-VIS spectroscopy, and the pigments were further characterised by colourimetry, Energy-Dispersive X-Ray Fluorescence Spectrometry (XRF), Fourier Transform Infrared Spectroscopy (FTIR) and High-Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD). They all exhibited a rose hue in a highly insoluble aluminate matrix. Although the dye extraction was incomplete, alizarin, purpurin and pseudopurpurin were identified. An analytical comparison with a Rose Madder 19th-century oil paint tube was also performed by micro-FTIR and microspectrofluorimetry. This work intends to be foundational to a systematic study of the W&N’s 19th-century madder colours aiming to contribute new knowledge towards their identification and preservation in heritage objects. Full article

This technical study of three Mexican lacquer objects, dating from the 16th, 18th and 19th centuries, analyses different lacquer manufacturing processes and their local characteristics through the centuries. The technical analysis of each object highlights their material and technological innovation. In addition, we describe individual stylistic characteristics of Mexican lacquer production centres, Peribán and Olinalá. Finally, we conclude with a few observations about the taste for Asian lacquer in the West, and how this impacted lacquer crafts around the world. Full article

In the last 20 years, research on the observed and projected impacts of climate change on cultural heritage has led to significant developments regarding damage quantification and risk assessment, which unfortunately are not yet exhaustively transferred to practical applications and to the sector of policy and decision making. One of the major reasons for this still lacking alignment remains with the inadequate handover of quantitative data, which is a prerequisite for the development of measures and strategies for the mitigation of the impacts and risk reduction. In this paper, we focus on the methods and approaches put in place for the production of projections providing quantitative assessments of climate change-induced impacts in the near and far future (up to the 21st century) on outdoor built heritage mainly constituted by stone and stone-like materials. Our critical study found that different approaches have been applied for quantifying slow cumulative damage due to the ongoing variations of climate and air pollution parameters and to risk assessment caused by hydrometeorological extreme events induced by variations of temperature and precipitation. There is clear evidence that efforts are still needed for directing research to provide concrete solutions and tools addressed to meet the requirements of stakeholders and to solve the existing challenges in the field: selected effective models and tools are illustrated. The discussion is structured in order to highlight the driving role of research in supporting the definition of priorities for heritage managers and the development of strategies by decision and policy makers for the prevention and safeguarding of cultural heritage at risk. Full article

Textiles and clothing were and still are an important source of culture as well as an indicator of a robust economy and social status. Textile household goods and clothing are important heirlooms, providing valuable information about the standard of living, socio-political events, and cultural influences of the regions from which they originate. This paper presents the preliminary results of a research project dealing with the traditional natural dyes used in Greece for the decoration of garments from the 19th century onwards (from the 19th until the mid-20th century). The research aims to identify and record all the different plants and dyeing techniques used in Greece during this period and also to propose a non-destructive methodology for the study of dyed textiles in order to facilitate their preservation. In this paper, the focus is on the presentation of the classification and identification data of the plants used as the dyeing sources, according to recipes collected in various areas in Greece, as well as the description of their botanical characteristics. The research was based on the study of more than 2000 manuscripts and many interviews with older people who have used these materials. Thus, more than 140 plants have been documented, together with their recipes. The data produced include the phytological characteristics of the plants, as well as the parts of the plant used, the period collected and the areas they were used, together with images of the plants and various details regarding the recipes used in many places around Greece, along with the related documentation. The study also refers to ethics and traditions related to the dyes, the color, or the dyeing procedures used. Woolen samples were prepared based on the data collected in order to investigate how the differences recorded from place to place are reflected in the final result. Through this research, it was possible to identify and replicate some of the non-common recipes which use the Mediterranean strawflower, Helichrysum stoechas (L.) Moench, red algae, Rytiphloea tinctoria (Clemente) C.Agardh, and the common poppy Papaver rhoeas L as dyestuffs. Full article

The present study reports the conservative first aid concerning the human cranium known as the “Skull with Ears”, which is conserved in the crypt of Santa Luciella ai Librai’s church in Naples, Italy. These remains have historically been worshipped by devotees within the cult of the “abandoned souls”. The skulls were “adopted” by the Neapolitan population and treated with particular care in exchange for divine favors. The critical preservation status of the “Skull with ears” required a multidisciplinary approach aimed at defining the taphonomy and anthropological features of the cranium, while determining the state of its conservation by using a multi-analytical approach. Multispectral imaging, 3D modeling, X-ray imaging, microscopical observations, and microbiological tests enabled the documentation of the cranium while assessing this state of conservation. Electron scanning microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FTIR) in the attenuated total reflectance (ATR) mode, and radiocarbon dating allowed for essential data to be obtained on the cranium’s history and constituent components. The results that were obtained from both the analysis of the cranium and the environmental monitoring of the crypt showed the advanced degradation of the bones due to a significant bacterial attack, which was facilitated by the inadequate environmental conditions at the site of conservation. The acquired data enabled the definition of the most suitable conservation strategy and the securing of the cranium. Full article

From the 17th to the 19th century, a score of military events, campaigns and battles took place in the Czech lands, leaving numerous traces and distinctly changing the appearance of the cultural landscape in some regions. The results of long-term aerial-archeological surveys in the Czech lands have demonstrated that this detection method is advantageous in identifying buried sites built in the past in the context of military conflicts. Experience hitherto has made it possible to label archeological remote sensing as a collection of the potentially most effective methods for uncovering sites of field fortifications dated to the modern period and the beginning of the industrial era. This includes finds of both solitary sites and segments of strategically built fortification lines. This paper is an attempt to critically evaluate these hitherto recorded landmarks which have been discovered and documented via aerial prospection from the 1990s to the present. At the same time, this study reflects on the possibilities offered by the modern methods of remote sensing which have played a significant role in the discovery, mapping, documentation, digital terrain modelling, and the 3D virtual reconstructions of these sites. Full article

This paper presents the results of non-invasive diagnostic investigations performed on the canvas oil painting depicting the Marian iconography “Mater Boni Consilii”. The painting, whose author and origin are unknown, was found in an old shop in Florence following the overflowing of the Arno River in 1966. In order to define the importance of the artwork, a multianalytical analysis was performed on the painting, using multispectral imaging, X-ray fluorescence (XRF), and Fourier Transform Infrared Spectroscopy (FTIR-ATR) for the definition of materials, with a particular focus on the identification of pigments. The results allowed for the drawing up of a color palette, composed mainly of ochre and earth pigments, cinnabar, lithopone, lead white, and ultramarine pigments. After cross-referencing the acquired information with other findings, it was possible to place the painting in the period between the end of the XIXth and the beginning of the XXth centuries. Full article

Contemporary muralism is one of the most widespread manifestations of urban art in cities nowadays. Loss of colour (fading) due to degradation of the pictorial materials is one of the main manifestations of deterioration in this type of artwork. However, the application of protective coatings is considered to slow down fading. In this study, two acrylic-based protective coatings were applied to selected areas of a real mural painted with six different alkyd paints and one acrylic paint. The impact of the protective coatings on the original paint colour and the long-term efficacy were evaluated. For purposes of comparison, the same protective coatings were applied to paint mock-ups prepared under controlled conditions and exposed to an outdoor environment with marine influence and to an ultraviolet aging test. At the end of the exposure periods, physical and chemical changes were evaluated using a multi-analytical approach based on stereomicroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy. Both protective coatings modified the original colour of the paints, with the impact being greater in the mural than in the mock-ups. The efficacy of the coatings as colour protectors is more appreciable in the most colour-stable paints. Thus, neither of the coatings provided good protection for the paints most sensitive to deterioration. The protective efficacy of the coatings was also influenced by their chemical composition and affinity for the painted surfaces. Full article

The fringe projection (FP) method is an outstanding tool for reconstructing painted surfaces. This technique, which has been used for conservation and digitization, does not damage the artwork and can reach sub-millimeter accuracy. To carry out this type of analysis, it is necessary to achieve the most accurate measurements possible. Measuring the precision that a projector-camera-object arrangement can achieve is a complex task. In this paper, we show an experimental method used to measure the accuracy of this technique with instrumentation within the reach of most conservation laboratories. The method consists of capturing, as a reference model, a stepped cylindrical Nylamid^® pyramid, as a construction whose shape, size, and manufacturing accuracy are known with high precision. The pyramid has eight well-defined steps, which are fashioned with an accuracy more exact than that of the fringe projection method. The height of each step was measured, obtaining the mean and variance of the height measurements fitted to a Gaussian distribution. In this work, we show the measured heights of the steps, obtained by varying the period of the fringes. The smallest detectable step height was less than 44.1 µm; however, this was obtained with a variance in the order of the step height. The smallest detectable step height with a small variance was 0.1008 mm. In addition to this accuracy measurement, a qualitative evaluation of a painting was carried out, finding the presence of possible superimposed thin layers, fabric, and microcracks, which commonly occur in the drying and aging processes. Further research would provide an experimental measurement of the method’s accuracy and its variance as essential for obtaining a confidence criterion that could then be applied to the model of the painting’s surface. Full article

For the past 20 years, THz pulsed time-domain imaging has been used to study the internal structure of various paintings. The main advantage of this technique is that it can nondestructively provide depth profiles, as well as conditions of preparation and support layers, which are important in conservation planning. We have applied THz pulsed time-domain imaging to artworks with linings, which are additional layers of fabric or paper adhered to the back of an original painted work on canvas or paper to reinforce it, usually for conservation purposes. If the lining material or the interface between the lining and the original canvas or paper deteriorates over time, there is a risk of further problems. Therefore, THz pulsed time-domain imaging is expected to be suitable for examining lined paintings. In this paper, the investigation of artworks with lining layers using the THz pulsed time-domain imaging technique is presented, in addition to previous studies of Japanese panel screens and modern oil-canvas paintings with wax-resin linings, as well as a detached fresco painting mounted on a canvas by the “strappo” technique. Full article

The work carried out as part of construction on a ring road around Nardò (Lecce, South Italy) involved a votive aedicule attached to the perimeter wall of a rural building that had been scheduled for demolition. Provision was made for the movement and relocation of the building, dedicated to St. Mary Magdalene, to an adjacent area, in addition to the restoration of the pictorial decoration itself. The intervention was designed to conserve the building as testimony of its use for future generations, given its value and sense of identity for the local community. The project was largely conservatory, thus guaranteeing the continuity of its still active devotional function. In this sense, the restoration of the building was also associated with an educational aim of raising awareness of the importance of eco-compatible care of the landscape. So, this project highlights the importance of social, as much as environmental, sustainability. Full article

A material-based approach for the digital restoration of chromogenic photographic and film materials affected by dye fading is proposed. Through a digital reconstruction of the original optical properties, the proposed restoration methodology approximates the original color appearance in a non-subjective manner, thus improving the results compared to conventional RGB tonal re-adjustment of the film scan both in terms of quality and presumed faithfulness to original appearance. In order to do so, the degree of fading is derived from neutral black parts of the film’s image content, and the knowledge of the film material’s spectral densities is used to digitally reconstruct the colors corresponding to the material’s original dye concentrations and render them in an RGB space. For a comparison, results from conventional re-grading were adjusted to render them most similar—and thus comparable—to the results of the proposed spectrally informed digital unfading. The restored images obtained through spectrally informed unfading were deemed clearly superior in terms of color subtlety, color faithfulness and coherence. Full article

Gastronomy, as a part of cultural heritage, has exceptional potential in tourism, and its key representatives and conservationists/guardians are hospitality facilities that provide food services. Vojvodina (the Republic of Serbia) is a region inhabited by more than 30 ethnic minorities that have nurtured their cultural heritage and have been incorporating it into gastronomy for many years. The subject of this paper is the gastronomy of ethnic groups in Vojvodina and its significance for tourism development from the point of view of hospitality workers as important actors in the sustainability of heritage. One of the motives behind this study is the twelfth UN sustainable development goal (SDGs) defined in 2015, which refers to providing sustainable forms of consumption and production and which emphasizes the development and application of tools for monitoring the impact that sustainable development has on tourism that promotes local culture and products (12b). The aim of this study was to obtain data on the preservation of heritage, that is, on authenticity within the region/area and ethnic groups, and then to perform a valorization of dishes and define steps on how to make gastronomic heritage a more visible tourist attraction, from the perspective of sustainability. Our survey included a sample of 508 respondents, all employees in the hospitality industry. The obtained results were statistically processed. The research showed that the Južnabačka district has the greatest importance in tourism from the aspect of the implementation, preservation, and sustainability of gastronomic heritage in tourism. Among the ethnic groups, the Vojvodina Hungarians place the greatest importance on the preservation of gastronomy, which includes dishes such as goulash and uses ingredients such as river fish. The research led to the conclusion that those in the hospitality industry are of the opinion that gastronomic heritage should be promoted through activities such as tourist exposure, marketing activities, and promoting the diversity of authentic food offers in catering facilities. Full article

This study is concerned with recent analyses of seven marble statues from the imperial cycle of the Augusteum of Rusellae, in the south of Tuscany, Italy. The sculptures represent the deified couple Augustus and Livia, Livilla, Claudius, an anonymous young girl and a headless cuirassed emperor (maybe Domitian). In addition, a fragment of a leg, from another cuirassed statue, was also considered. All of them are preserved in the city of Grosseto, in the Maremma Archaeology and Art Museum. Still preserved traces of polychromy and gilding were investigated both in situ, using non-invasive portable techniques, and in laboratory, taking two micro-samples. The non-invasive approach was based on multi-band imaging techniques (Vis, UVL and VIL) integrated with analyses (XRF, reflectance spectroscopy). A portable optical microscopy was also used for documenting the analysed areas. Two micro-samples from the gilding decoration of the headless cuirassed statue were also analysed using EDS-SEM. Comparing the results from the analytical survey, important information about the use of ochres and Egyptian blue on the cuirassed headless Emperor statue has been highlighted with the presence of gilding in the cuirasses and in the mantle, enriching the knowledge of this important imperial cycle, in addition to contributing to the archaeological point of view. Full article

The aim of this study was to analyze a set of pietra ollare fragments that presented burnt encrustations to further understand the use of pietra ollare vessels during the Middle Ages. The fragments were obtained from Nogara (Vr) and date to the 9th–10th centuries CE. To obtain a variety of data, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS) and pollen analyses were performed. The SEM-EDS enabled the microscopic observation and the understanding of the chemical composition of the encrustations; the pollen analysis was performed to find possible pollen trapped in the encrustations. The pollen was scarce, but notable specimens were found. The results SEM-EDS analysis provided data possibly linked to meat preparation. Further analysis will be conducted to deepen our understanding of the use of the pietra ollare in cooking practices. These results are relevant because they match other data that have emerged from the excavations at Nogara (archeozoological and paleobotanical) and because the use of this kind of vessel remains poorly studied. Full article