Hi everyone. My doctor has this old flintlock that he says is a revolutionary war flintlock given to him by one of his patients who pickedgrov it up a long time ago back east. To me it looks like a contract rifle. let me know what you guys think. The barrel is at least 42 inches long. It is swamped and has odd looking seven groove rifeling. The pan is pitted from use and the frizzen is worn. The cock is flat with a beveled edge. there is a name engraved just to the right of the base of the cock (where a crown would be on a brown bess) that says "S Johnson". There's no date on the buttstock but this is the most worn part and pretty rusted. The barrel is pinned to the stock with round pins. The cleaning rod is all wood, tapers outwards and has a pigtail cleaning jag on the other end. The cleaning rod is "two toned". The exposed part of the rod is dark and the unexposed part is much lighter in color. Almost as if someone stained it while it was still in the stock. But it's probably just patination. The whole flintlock mechanism doesn't quite fit in the hole in the stock. You can see a gap between the lockplate and the stock on the lower left hand side of the stockplate. The trigger looks a lot older and more fragile than the rest of the gun, but seems "right" to me. The trigger plate is hand forged and is pointed on both ends with a wide area over the trigger. The neck is round, not oval, and the whole gun is in very good shape except for the rusty buttplate that has actually rusted through to the wood. Can anyone help me with this rifle? Especially that odd rifling? Is it worth getting it appraised?