Whitney 12 ga SxS

[Frontstuffer070]

A friend of mine just acquired a couple really nice old double barrel percussion Shotguns. This one is what we believe to be a Whitney Arms percussion SxS. I looked at a few past auctions online and it doesn't seem that they sell for very much at all. But that's beside the point, the gun is is really good shape and can be fired if we can figure out how to fix the right hammer. Which is why I'm posting.
The hammers are held on not by a screw like any other side lock, but by some kind of square collar (washer if you will) with a round hole in the middle, that is (I guess) pressed onto the tumbler. Anyway, the right hammer has this collar missing so the hammer will just come right off. Is anyone familiar with this shotgun and have any idea how we can replace this part. I'm going back over there today and I'll get some pics. Any help is greatly appreciated.

 

[Frontstuffer070]

Any Info greatly appreciated.

 

[deerstalkert]

that orange back ground just sucks up the light. really hard to see detail.
but..... another gem!

 

[Frontstuffer070]

Yeah, you're right. He didn't have any other color. I guess, I would have been better off with the concrete garage floor.

 

[ZUG]

From what I can see it looks like a well-made gun and it's in good condition.

 

[Lorne Johnson]

Since there is no sign of threading on the tumbler end, it would seem that the collar was a press fit. The collar on the left hand lock looks as if it might be brass, which should work well for a press fit. It should be a fairly simple job for a machinist or gun smith to fabricate. I would guess around an hour of labor. you might be able to fabricate something that would work out of a thick brass washer, carefully reaming out the center hole until it would press on very tight.

(Typically, the hammer is pressed on to the square end of the tumbler and unlikely to come loose, but is also retained by a male screw cap threading into female threads in the tumbler end. This is clearly a different system.)