My son-in law gifted this rifle to me reciently.
I have had the folks at Collectors Firearms in Houston TX have a look at it---they feel the rifle was created in the upper Ohio River valley sometime around 1850.
I sincerely appreciate any information you might have----hope i get the pics correct.
Dave
this is on the barrel under the forearm
The barrel is 41 inches long and measures 38 calibre
I can add more photo's ----just let me know what will help