I have an old one. The barrel is 42" ,cal. 40. Full stock, striped maple, very plain. No ornamentation, no patchbox, all iron furniture, double set triggers. Toe plate and butt plate are staked in place. Weighs close to 13 pounds. It has two fore-end caps, first is iron sheet metal and the second joins the first like it was "poured" in place and appears to be pewter. On the top flat, between the rear sight and breech plug it is stamped J, McKee. Have been told he was from Mecklenburg County, NC.
Any info you guys have would be great.
John