@jeff, I know that you said the edge looks good, but I'm not so sure. It kinda looks to me like the edge has been filed flat and that could be concerning. I'm not an expert in British hammered silver though. Could you please add a couple more pics of this area? Thx.
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz
Thanks all very much for the replies. I'll do another better pic of the edge later today. It is reassuringly uneven in hand, now I've got an ID i'll get authenticity confirmed either way in hand by an appropriate auctioneer or dealer