Postby silvermakersmarks » Sun Jan 22, 2017 12:49 pm
The mark in the link is a Birmingham mark, not a London mark, but Carroll also registered marks at London. Interestingly enough the mark registered for London has a different punch shape. I based my Birmingham attribution on a mark registered at Chester on the premise that many Chester marks were also used in Birmingham. It would seem that, by mistake perhaps, they have used the wrong mark for this medal.
Phil