The gun is an original English smooth bore, circa 1795 - 1800. 33 gauge / .52 caliber, 44" barrel. Belonging to my great, great grandfather, it was converted to percussion at some point. It appears to originally have been a half-stock, made from nice English walnut. The original Ketland lock is engraved as are the rest of the iron mounts.
Copy and photos supplied by Jeff Bibb. More work at Jeff Bibb Pouches and Horns.