Just came onto a navy arms colt 45 serial number 27581 in front of the chamber. Also on the frame is BM that is in a box. On the front of the frame isletters cat5563.
Ther appears to be some kind of insignia on the chamber and the right side of the barrekk the lettewrs are PSF This gun was pat in Sept 19, 1871, july 2, 72 and Jan 19 75 Does anyone know anything about this pe\iece? or what the letters and numbers mean? Appreciate any info.