I can not find any markings anywhere other than a simple brass carp inlaid on the left hand side.
All I know is it's old. Upon removing the wood stock you're immediately struck by the smell of an old attic or an antique book.
Pistol is approx .45 caliber, and about 19-20 inches long overall. Mostly barrel, which, I believe is 14 inches in length. I would venture to say it is at least 50 years old, but every time I examine it I wonder if it's even older. I'd love to know it's age or origin.