Your father must be "ancient" :rotf:
Here's a piece from one of the noted auction sites from a few years back -
Kentucky Flintlock Rifle, by "Russ Hamm, Warranted", 40 caliber, Mid to Late 1800's Antique Weapon.
This Kentucky Flintlock Rifle, is marked on the Lock Plate "Russ Hamm, Warranted", and is in 40 caliber, with double set triggers.
This Antique Weapon has a very dark tiger striped full stock with ornately carved brass inlaid furniture, and a silver like eagle inlay. The stock has been broken and expertly repaired in front of the cheek piece.
There are pins missing from the trigger guard, replaced by modern ones, and modern screws have been put in the patch box. This Rifle will not hold a cock. This is a really nice looking rifle that needs just a little care to make it a beautiful piece.