Blunderbuss with Funnel Muzzle is 2¼” Diameter (Al5242)

Blunderbuss with funnel muzzle is 2¼” diameter. Lock is marked “Jos Golcher” (Joseph Golcher was a lock maker only in Philiadelpia). Flintlock with Roller frizzen, so probably manufactured approximately 1810-1820. Barrel length 26½” and 40” overall length. Trigger guard finial marked “1820”. There are some worn letters on the breech end of the barrel that are not legible. No proof marks. This is possibly an American made blunderbuss. Action works perfectly. Very unusual blunderbuss!