Can you ID this pistol?

Hmm;

 You know , you could be right .There's to much corroded to be sure , But I bet you're close . T.B.

Thanks KT5150, you just may be correct.

Cheers...

I'm not a gun person, but looking at the general shapes, it suggests a pinfire design.  The French Lefaucheux family of revolvers may be possible candidates.