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 envelope, with a colourful design on its front and a red background and reverse, is typical of the 1990s and early 21st century. On the front is a traditional sailing boat, or junk, sailing on a calm sea with just a few clouds high in the sky. The four characters written on the main sail wish for 'the wind in your sails'. This phrase is used as a general wish for good luck, but is especially used to wish 'Bon Voyage' to someone setting out on a journey. There are five other good luck wishes on the front, all presented as though stamped images from a carved seal. They wish for peace and calm, wind in your sails, a wonderful future, abundance and profit. Wishing everyone a happy #ChineseNewYear! #GongXiFaCai The inscription on this tall red envelope translates as 'Good luck in all you wish for!' Above the inscription are illustrations of three objects representing traditional forms of money in China, and a ruyi sceptre. The traditional forms of money include spade money, a coin with a square hole in the middle, and a small silver ingot. Unlike real coins, the spade and coin carry good luck wishes: 'good luck' (on the spade) 'in all you wish for' (on the coin).The ruyi sceptre also conveys a wish for good luck as ruyi means 'all you wish for'. Happy #ChineseNewYear! #GongXiFaCai Happy #ChineseNewYear! These are called xiao hongbao, literally translated as 'little red envelopes'. Red is the colour associated with celebration in China. In the 1990s, a new style of money envelope appeared. Although it still had a red back, the front was printed in many colours and overstamped in gold. On this envelope there are lush peony flowers in full bloom. They are symbolic of spring, as well as feminine beauty, love and affection. In Chinese, the peony is known as mudanhua or fuguihua. The characters fu ('wealth') and gui ('honour') appear frequently in good luck wishes, and pictures of peony flowers add strength to the wish. The inscription on this envelope reads 'May wealth and honour blossom, in abundance year after year'. The arrangement of the peonies and the inscription is reminiscent of traditional Chinese flower painting. #GongXiFaCai We welcome nearly 7 million visitors a year to the Museum and this photo by @zoenorfolk wonderfully captures the movement of people around the Great Court. Completed in 2000, the Great Court also features a quote by Tennyson: 'and let thy feet millenniums hence be set in the midst of knowledge...’
#repost #regram
Share your photos of the British Museum with us using #mybritishmuseum and tag @britishmuseum In 2000, the Queen Elizabeth II Great Court designed by Foster and Partners transformed the Museum’s inner courtyard into the largest covered public square in Europe. We love this striking photo by @adders77 showing this incredible space at night #regram #repost
Share your photos of the British Museum with us using #mybritishmuseum and tag @britishmuseum This wonderful photo by @what_fran_saw captures the stunning Great Court #regram #repost
The two-acre space of the Great Court is enclosed by a spectacular glass roof made of 3,312 unique pieces!
Share your photos of the British Museum with us using #mybritishmuseum and tag @britishmuseum
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