I have an old S&W top break .38 made in 1908 if I remember correctly. I had the bbl cut down to around 2" and fitted it with a set of Pachs meant for a J frame. Then I had it Duracoated. It's off having a bead front sight fitted. Eh, I traded some .30-06 ammo for it, never used it, and then ran short on pocket guns. Hence it's rebirth. I doubt it was worth much before I worked on it, and I doubt that it is worth much now, but at least it has some utility value.
I also have a Krag sporter that I'm not sure how old it is. I suppose I ought look that up. I know it is pre 1899 since it shipped direct. I think it is from 1896. In rough shape when I got it, I had it refinished and duracoated. Looks fine now. Before I got it, it looked as though someone had it propping a barn door closed for 50 years and used it to stir paint at least once... I've thrown it in the trunk on at least one road trip.
Then there's my 1911s. One, a GI mixmaster, has a 1918 Colt frame on it. I consider it just another functional utility gun to be used the same as any 1911.