Thanks for all the kind comments, especially Doc Drew for the Damascus identification.
CB, the barrels are 32", Stan, it is choked cylinder in the right, .035 in the left.
Rob, see the charge card below.
Two questions: for what purpose would someone want such a heavy gun with this choke configuration?; and
assuming it won't be handled much, what is the best way to preserve the colors? I used Renaissance Wax when it first came to me.
LeFusil and Brent: Yes, it certainly should be used but I probably won't - I would be terrified of tripping and bashing it while turkey hunting, falling face flat in the marsh, or smacking it on the side of a pit blind. Tragically, due to the lock down I won't be able to hunt turkeys at all this year; I normally use a Smallwood hammer ten for that, but had planned on my Greener 12 bore Far Killing Duck hammergun this year. Brass shells, BP, and bismuth in both.
I know nothing about its history but Atkins Grant & Long sent me the ledger entry, with a later penciled note that it
"..has some connection to Douglas Tate."