According to the information I can find this was made to copy the 1st Generation (Blackpowder Era 1873-1899) it has the screw in front of the frame that holds the cylinder base pin in, the only marking I can find is on left front of trigger guard says 45 cal. Firing pin is on hammer, selling as is should be checked by gunsmith before firing $400 cash or trade for handguns REDACTED