@portableant: The Roman 'brothel token' record on the @findsorguk database http://bit.ly/zDEYUP by Kath Creed and Pip Walton #archaeology
This is a rare pornographic token - the only one found in the UK, and one of the few spintriae found in a context (ie the mud river banks at Putney) as many are thought to be Renaissance and later fakes - so it's wonderful to see that the finder not only reported it to the PAS but also donated it to the Museum of London.
Hobbyists who use metal detectors are often criticised by some archaeologists, but this is a great example of the Portable Antiquities Scheme working well. The finder is to be congratulated - sprintiae are so rare that the dealer I spoke to didn't even know how to value one - and praised as an example of good metal detecting.