This A.J. Plate/Slotter derringer-size pistol is chambered in .36 caliber with a 1 1/2-inch barrel and measures 5 inches overall. It is offered used as antique handgun SKU AH4456. The barrel has lost its original finish, while the furniture is nicely engraved throughout, and the supplier describes it as a peanut-size gun.

What makes it interesting is the story: this is one of the counterfeit pistols marked Deringer that were not made by Henry Deringer, and those copies became the subject of his patent infringement lawsuit. That gives a Delaware collector of American pocket pistols a documented piece of gun trade history in a very small package. Any handgun transfer at a Delaware dealer means photo ID, Form 4473 and a background check, with the state purchaser permit or a carry license shown first; the permit route includes a certified course and fingerprints through the state vendor.

Key features

• .36 caliber, 1 1/2-inch barrel
• 5 inches overall, peanut size
• Engraved furniture, no original barrel finish
• Counterfeit Deringer named in Henry Deringer's lawsuit
• Used, SKU AH4456

It ships to a Delaware FFL dealer you pick at checkout, who handles the transfer paperwork before you collect it.