I just came into possession of a precussion pistol, a Springfield Rifle, and some sort of naval cutlass. The weapon that I want to inquire about today is the pistol. The only markings on the weapon are on the right side of the lock, where it says "USN 1844" and " P. AMES- Springfield Mass" Is this thing real ? Is it valuable? I know a thing or two about modern weapons, but nothing about antiques. Any help would be appreciated. Sorry about the photo quality. I also don't know much about digital photograghy.