Please help identify this derringer

[bkstark]

This pistol has no manufacture's markings except "1 255" on the heel of the grips and "255" on the underside of the barrel, which is only visible when the barrel is swung open. I'll attach as many pictures as I can. Thanks for any help or advice you can offer.

 

[ZBill]

Interesting little pistol

I can't help but would like to welcome you to the forum. Bill

 

[Jim Watson]

This is a very common type of derringer, made from the early days of metallic cartridges. Flayderman shows 14 makers of the type with a number of model variations.
Then there are the modern reproductions, of which there are a good number.
Without a brand name or proof marks, I don't see a way to track it down.

 

[Ron James]

As Jim W. stated it looks like a half dozen different derringers of that era, however it does bear a resemblance to the Iver Johnson Eclipse.

 

[Jim K]

My thought, too, but the Eclipse has no button on the bottom (locking is with a detent ball) and the frame is not quite the right shape. Still, I see nothing else even that close.

Another "mystery" handgun.

Jim