Some "ordinary" rifles are just that....ordinary. Others are graceful and even elegant in their simplicity. This rifle is just ordinary IMO. The head of the drum screw and the corrosion on the barrel above the drum suggests more that 50 rounds to me. Looking at the inside of the lock and a good bore inspection would be wise. As to a flint conversion....why convert....buy a flint rifle. If the bore and lock are good it would probably be a "worthy" rifle and give one good service. I paid $1500 for a exceptionally elegant ordinary 50 cal. flintlock purchased new from the maker. The stock was spectacular, the finish was striking and the performance was superb and all the components were top of the line. I sold it after years of easy use for $1,500. I do like the documentation and "history". That tends to add some value to me. So how much is it worth to have a Doc Hopkins rifle? That's the "value" question. As to the wood and iron....not much.Track of the Wolf can be a useful source of market value to some degree. Frequently "common" caplocks go for well under $1000. Rifles offered here on the forum also provide insight to prices. Some good stuff offered now for not a lot of loot!ACS
ACS makes some good points, especially about the drum screw and corrosion beside the drum.The bore's condition would be the make or break on a deal for me. Judging by the ratty crown, I suspect a badly rusted bore. Won't know for sure until the bore is cleaned.