Thanks for this, Mo. I had also checked the BSA site quoted, but I didn't see any machine like this. I did wonder whether it could have been earlier than 1911, before reading that BSA's were first made in 1910, and sold in 1911. The reason I had thought that was because the chap holding it had previously been identified as a village vet who died in 1911!!! If the bike is a 1920's model, its back to the research! Anyone guess at his age? thanks John