Circa 1911, Bisley with matching numbers, 5.5″ barrel and cylinder are replaced with .45 Colt SAA presumably to change caliber. Very common practice. Barrel and cylinder are period correct. Frame, trigger guard, and base are all matching numbers. Period correct faux ivory, most likely Bakelite. Grips are well fitted. Case hardening is very fine. Function is good. Lock up is tight. This gun was completely disassembled and checked. Sear & Bolt spring was replaced by us with quality reproduction. No rust. C&R Eligible