Interesting Gun. Originally proofed in Birmingham between 1896 and 1904 and then later re-proofed in London. 2 1/2" chambers and nitro proof. It looks as if it has had some metal bored out for the later re-proof as it was originally quite tightly bored at 14 bore but now a true 12 in the barrel at .729 which means it measured between .729" and .740" at time of proof. It would be classed as out of proof in Britain if it ever goes beyond .740" at 9" from the breech face. It looks like the work of the Midland Gun Company of Birmingham who were makers to the trade as well as under their own name. Excellent photos by the way. Lagopus.....
