I have had a really bad day and so finally nailing down this maker has birghtened my mood considerably! Thankyou very much for finding this information for me its very interesting.
While certainly not a best gun, the lock inletting is of very high quality compared to other back actions i have in my small collection. And the engraving is good coverage and was probably very nice in its day; as i mentioned before sadly now worn. Since he set up in 1859 and number 286 was 1863 i would imagine number 110 / 113 is a very early gun of his.
Damascus - Interesting piece, i have a back action hammer gun by ebral of shrewsbery, it is very barrel heavy, twist damascus ( just relaid the ribs and re browning ) one bore marked choked. I have come to the conclusion that it to was probably used a a duck or goose gun. Yours is a lovely gun that stock is beautifull honey/black marble. I have seen other guns come up in auctions with the similar hammers to that with that bulbous appearance and they have been described as replacements; perhaps those are non original any ideas?
Pictures of the other pinfire i have can be seen here ( just for your own interest )
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=381012&page=2