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.

If you would like to leave a comment click on the title

Filed under: Beau Street Hoard, Conservation, , , , , ,

Enter your email address to follow this blog and receive notifications of new posts by email.

Join 9,221 other followers

Categories

Follow @britishmuseum on Twitter

British Museum on Instagram

Dutch artist Aelbert Cuyp was born #onthisday in 1620. He seemed to be very fond of cows! The Sydney Opera House opened #onthisday in 1973.

Designed by the Danish architect Jørn Utzon, the Sydney Opera House provoked fierce public controversy in the 1960s as much over the escalating cost of its construction as the innovative brilliance of its domed sail-like halls. Now recognised the world over as a magnificent architectural icon jutting into Sydney Harbour, the Sydney Opera House finally opened in 1973. 
In this Christmas card for 1972 Eric Thake (1904–1982) cheekily anticipates the long awaited opening with his domestic version of the grand architectural statement. Crockery stacked in a drying rack forms the shape of the Sydney Opera House, with water from the kitchen sink adjacent. The small housefly resting on one of the stacked plates adds an unmistakably Australian touch.

Text from Stephen Coppel’s 'Out of Australia: Prints and Drawings from Sidney Nolan to Rover Thomas'
#art #architecture #sydneyoperahouse #sydney #print Born #onthisday in 1632: architect Sir Christopher Wren. Here’s a freehand drawing showing the relationship of the domes of the new St Paul’s Cathedral
#history #architecture #stpauls #London #art Room 4, Egyptian sculpture, is the next gallery in our #MuseumOfTheFuture series. The objects in this gallery range in date from 2600 BC to the 2nd century AD. Large-scale sculpture was an important feature of the great temples and tombs of ancient Egypt and was believed to be imbued with powerful spiritual qualities. Sculptures on display in Room 4 include stylised depictions of kings, deities and symbolic objects ranging from the time of the Old Kingdom to the middle of the Roman Period. There are also architectural pieces from temples and tombs.
An imposing stone bust of the great pharaoh Ramesses II presides over the room, while the world-famous Rosetta Stone (in the foreground of this pic), with its inscribed scripts, demonstrates how Egypt’s ancient form of pictographic writing was deciphered for the first time.
#museum #art #sculpture #history #ancientegypt #egypt #hieroglyphs Next in our #MuseumOfTheFuture series looking at all the galleries in the British Museum, it's Room 3. Since 2005 this room has housed a series of temporary displays – The Asahi Shimbun Displays. Usually focused on one object (although sometimes featuring several), it provides a space in which to experiment with display and interpretation. Displays have featured everything from ancient African hand tools to contemporary art, from Old Masters to manga. The current display (pictured) features an enormous print by Albrecht Dürer.
#museum #art #history Continuing our #MuseumOfTheFuture series showing all the gallery spaces, here's Room 2, Collecting the world.
The Museum was founded in 1753 and opened its doors to visitors in 1759. Room 2 celebrates some of the collectors who have shaped the Museum over four centuries, as well as individuals and organisations who continue to shape its future – from Charles Townley to Grayson Perry.
#art #museum #collection #history
Follow

Get every new post delivered to your Inbox.

Join 9,221 other followers

%d bloggers like this: