Hi Fellows, this is a gun that I found, it comes from Montana, with heavy thick butt stock, patchbox. It appears original flint, but No maker on barrel.
Attic Find Full Stock Rifle, with heavy thick butt portion to stock, tiger striped maple stock, with muzzle indentations in muzzle. (I thought it had been fitted for a false muzzle, but apparently the indentations are simply decoration.) Tight european fine grove rifling. It is about .50 cal. It has a Maslin marked lock, no maker on barrel, with overall heavy dark patina. The patchbox has 6 inserts, and I am not certain of origin. The hammer is not re-enforced. The forearm has 3 key escutcheons all original silver. Areas of raise carving around lock, triggerguard and escutcheon back side of lock. No maker on barrel, with a filled dovetail behind rear sight. Heavy butt estimates age from 1800-1810. It has a note inside the patch box that states the gun comes from a family in Montana and has been in their family for at least 3 generations. It has a replaced wood ramrod. It weights at least 15 pounds. IT has had some paint drip on it at some time in it's life. It has a 37 1/2 inch barrel with 1 1/2 inches across the barrel flat.
This is not my gun, it has been consigned to me. We took the barrel off, and it has been shortened from the breech end, the key attachments have been moved back approximately 3 inches. It weights about 16 1/2 pounds, and no maker or barrel maker name is on the underside of the barrel.
Regarding the paint a professional can do all sorts of things, but I would only let an expert try to remove that.
I am not sure about what other numbers people are asking about.