British Museum blog

The Beau Street Hoard: Not quite the end… conservation, outreach and further investigations

replica of coin block before conservation
Hazel Gardiner, Metals Conservator, British Museum

The soil block after excavation of the hoard and prior to dismantling and return to the archaeologists who carried out the excavation.

The soil block after excavation of the hoard and prior to dismantling and return to the archaeologists who carried out the excavation.

For those who have been following the progress of the conservation of the Beau Street Hoard on the blog, I am delighted to announce that all the coins – around 17,500 of them – have now been cleaned to required identification standards, that is, to the point where the legend and significant features are readable. Conservator Julia Tubman carried out the bulk of this work on the c.17,500 coins contained within the hoard. Additional work has been carried out on a small number of these coins and conservation has also been carried out on c.400 coins that were initial finds from the outer edges of the hoard, before the hoard proper was unearthed. This last group of coins were in particularly poor condition and most required substantial chemical and manual cleaning. These coins were held in numbered paper envelopes, some of which corresponded to small find numbers allocated when the hoard was excavated.

Envelopes containing initial coin finds associated with the Beau Street Hoard

Envelopes containing initial coin finds associated with the Beau Street Hoard

The soil block that held the hoard has now been dismantled and returned to the archaeologists who carried out the initial excavation for final sifting and checking for palaeoenvironmental remains: that is, material that might provide further contextual information about the coin hoard.

A washed but otherwise untreated coin from surface scatter coins showing the thick cuprite (copper oxide) layer obscuring the surface.

A washed but otherwise untreated coin from surface scatter coins showing the thick cuprite (copper oxide) layer obscuring the surface.

At the time of Julia’s last post, she reported that one of the coin clusters (bag 4), had been scanned. As with the other coins in the hoard, the clustered corroded coins retained the positions that they would have held in the bag in which they had been deposited. In this instance the bag shape was particularly well preserved. The initial scan was carried out at the British Museum by Martin Cooper of the Conservation Technologies Unit, National Museums Liverpool (NML). The scan data was used to create a 3D computer model, which was then 3D printed to make a replica of the coin bag using Selective Laser Sintering (SLS), a process that uses a laser to fuse particles of plastic or other material into the required three-dimensional form. A plaster cast was then made from the print and this was painted to resemble the original coin cluster, by conservators at NML.

replica of excavated coin block

The replica of bag 4

The replica has proved very popular among visitors to the Roman Baths and was shown at a Beau Street Hoard community consultation event run by staff at the Roman Baths earlier in 2013. Members of Bath Ethnic Minority Senior Citizens Association (BEMSCA) were among those who handled the replica. As a three-dimensional record of the original form of the coin bag, which of course no longer exists now that the coins have been conserved, the replica is an excellent supplement to the information gathered about the hoard, an invaluable means of allowing people to gain some sense of the physicality of (at least part) of the hoard.

Further exciting news is the forthcoming analysis of what appear to be animal skin remains from the bags used to store the coins. In one of Julia’s earlier posts she noted that traces of what appeared to be skin product, preserved by metal corrosion products, were found on the outside of each cluster of coins, suggesting that leather bags may have been used to house the coins. Professor Matthew Collins and colleagues at BioArCh (University of York), are hoping to extract collagen from the samples provided and to identify the species of animal skin used. Identification of the animal species will be made by peptide mass fingerprinting, an analytical technique for protein identification. We look forward to hearing the results of their investigations.

Possible skin product preserved by corrosion products from the coin beneath.

Possible skin product preserved by corrosion products from the coin beneath.

Find out more about the Beau Street hoard and the Roman Baths Museum fund-raising campaign.

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This is a great shot of a sarcophagus by @ss.shri – it shows how well preserved the 2,600-year-old craftsmanship is. It was made for Sasobek, who was the vizier (prime minister) of the northern part of Egypt during the reign of Psamtek I (664–610 BC). His face is naturalistic and shows the use of makeup, but it’s probably not an accurate likeness. Many human-shaped sarcophagi had exaggerated facial features during this period. 
Don’t forget you can share your photos with us by using #mybritishmuseum
#regram #AncientEgypt #statue #sculpture #Egypt #history #BritishMuseum Our Egyptian Sculpture Gallery (Room 4) spans over 3,000 years of history! The gallery contains iconic objects such as the Rosetta Stone – the key to deciphering ancient Egyptian hieroglyphs – and the colossal 7.25 ton statue of the pharaoh Ramesses II. What’s your favourite object in this gallery?
#AncientEgypt #Egypt #Thebes #RosettaStone #sculpture #statue #history #BritishMuseum #mybritishmuseum We love this strong image taken by @nickyhofland. These powerful figures of King Senwosret III stand in our Egyptian Sculpture Gallery (Room 4). He reigned from 1874 to 1855 BC. These representations of him are interesting because they aren’t idealised – you can see expressive lines and furrows on his face. This contrasts to earlier kings who appear youthful throughout their reign. The king also has peculiarly large ears in these statues, which perhaps symbolised his readiness to listen. If you’d like your photos to be regrammed, tag #mybritishmuseum

#regram #AncientEgypt #statue #sculpture #Egypt #history #BritishMuseum This striking mosaic was made around 500 years ago in Mexico. It’s a pectoral – a type of jewellery designed to be worn on the chest. Double-headed serpents (known as maquizcoatl) were considered to be the bearers of bad omens and were associated with figures of authority who may have worn this type of jewellery as part of a ritual process. The object is expertly decorated with tiny pieces of turquoise that create textures and shapes on the serpent’s ‘skin’. The eye sockets could have been inlaid with dark gemstones giving the impression of flickering eyes. 
#turquoise #Aztec #Mixtec #serpent #jewellery #Mexico #🇲🇽 Eagle costumes were worn by prestigious warriors in Mixtec and Aztec culture, and the handle of this knife, made around 500 years ago in Mexico, represents a crouching eagle warrior. In mythology the eagle represented the power of the day and was believed to carry the sun into the sky from the underworld each morning. This object is decorated with turquoise, malachite, and four types of shell, with a flint blade. Highly decorated knives like this one were probably used in ceremonies or symbolically rather than for practical tasks – the construction of this knife suggests it wouldn’t be sturdy enough to be used for cutting.

#Aztec #Mixtec #knife #eagle #turquoise #Mexico #🇲🇽 This mask represents the Aztec god of rain, Tlaloc, who is characterised by large eyes and a twisted nose. The mask is formed from two snakes which intertwine to create the face, their tails forming the eyebrows (originally gold). This object has also been associated with Quetzalcoatl, the feather serpent, because of the feathers which hang down from the eyebrows. Made in Mexico about 500 years ago, the mask may have been worn by a priest during rituals.

#Aztec #Mixtec #turquoise #mask #Mexico #🇲🇽
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