Join Date: Jul 2010
Location: St. Louis, MO area.
Unfortunately, this is a locally made lock. Likely Afghan made from a combination of surplus parts and locally made parts. The attempt at the EIC designation and date on the tail are both spurios. Curiously, the sear, sear spring, tumbler and plate look like it came from some type of European lock. But the hammer, frizzen, pan, and lockplate all look like local construction. Note the tapered width of the frizzen was never seen on European locks of any that I know of. But it does copy the frizzens seen on South Indian pistols.
Wish I had better news. However, if this lock came from an Afghan Jazail, it would make perfect sense.