I am sorry but you are correct in the fact that I am a bit of a novice when it comes to Smiths. I own several fine ones, but I have not done a whole lot of research on them to date. I will definitely have to join the forum you suggested. I'll post some photos from the bottom of my Pigeon grades barrels for you to see, I don't know, perhaps they are factory replacements, I would be interested in knowing. If so the engraving and inlay must have been done at the same time on the top rib.
I guess I have never been brave enough to run smokeless loads in any of my damascus guns, though I have read several excellent articles and arguments to make me believe that it is certainly possible and reasonable. I just like the feel of black powder and that is what I prefer to use. I do the same thing in my other antique and reproduction rifles and pistols, just a preference I guess. I've shot a lot of ducks and geese in North Dakota with blackpowder bismuth loads and don't find them to be any less effective than smokeless on these game birds. I also enjoy the ritual of loading these cartridges with period tools and find it a good way to relax after a long day. This is a great site and has been a tremendous resource to me, keep up the good work.