I agree. don't know enough about the sn data but will look further. All in all, I think it is a pretty neat old gun. I will do as much clean up as prudent and if the barrels are nice and thick, I may find some light 16ga shells. I might use a long string for the first two. :)

Jack,
I'm not sure what the odds are of one of these 16 gages showing up at my office but that’s what happened on Wednesday. This gun belongs to a guy I know who's grandfather used it many years ago. I took pics of all the markings and plan to post them on Double Gun when I get time to see if I can come up with and age and maker for him.

That is a nicer example than mine. More ornate engraving and more interesting hammers. As for the odds - at least slim chance I would say but regardless it happened. I would have bet against that happening, which is why I haven't been able to secure my old age through playing the odds.