They were great guns with slow twist round ball barrels. The furniture on the rifles I have seen is very good. I had one in .50 as a flint lock. Wish I still had it. On the used market they are going for $700+. If the gun was made in Missouri, they are of later manufacture and the wood to metal fit was not as good as the earlier models. Regardless, at that price i would snap it up. You know, I just realized that I didn't ask if this was a slide lock gun or one of their in-lines. I know nothing about the in-lines.