Two years ago, I posted about the Apache, an unusual weapon consisting of a folding knife, handgun, and knuckleduster made in the second half of the Nineteenth Century. This weapon appears to be an earlier -- or at least more primitive -- version of that concept. It's a knife with a single-shot percussion pistol. There's a crown marked into the steel, but otherwise, its origin is a mystery.
http://www.tortugatrading.com/engine/inspect.asp?Item=2664&Filter=Arms,+Armor -via The Firearms Blog | Photo: Tortuga Trading