Can anyone give me information on an H. Adkin single barrel hammer gun I have? Serial # is 1086, 32" Damascus barrel reproved at 2 3/4", non-rebounding hammer, full-length, smooth, concave rib, humongous barrel wall thickness, ebony forend tip, and pleasantly weighted (about 7 1/4 lbs.) When is this gun likely to have been built? And what is its intended purpose likely to have been?
Thanks in advance.

http://www.jpgbox.com/page/19220/
http://www.jpgbox.com/page/19221/