Are there any proofmarks on the water table or flats on the the barrel flats?

The angle of the hammers suggests it may have been a pinfire. If so, it's more than likely to be of European origin. It was not unusual for guns of that period to have one barrel smooth bored and the other rifled, in the Paradox style. Certainly muzzleloading double guns are found that way.

Last edited by Valman; 10/11/21 12:35 AM. Reason: correction