Wow - grat find target1! Until someone pipes in I found...This model features Rev. Alexander Forsyth lock which was the 1st commercially produced percussion lock. The simulated. brass barrel is stamped Joseph Kirner, 1807. Length: 12.75", Weight: 1.2 lbs.Take a look at...
Nokta FoRs Gold, a Gold Cube, 2 Keene Sluices and Lord only knows how many pans....not to mention a load of other gear my wife still doesn't know about!
You found that laying in the sand, and in that condition? Doesn't look like it's ever been in a
dry climate.
For something such as this, I wouldn't hesitate to contact a local firearms museum,
or find an expert on antique firearms in your area. FWIW, it looks to me like a Dueling Pistol.
I agree (contact a local firearms museum) DizzyDigger. You can't tell from his picture if it is a repro or original. Now, all my searches show they all were repro's - couldn't find one article that they made this Dueling Pistol with 1807 stamped on the barrel - sure sounds like they all were repro's.