Colt Single Action Army Revolver 5.5” barrel, .45 caliber. After-market engraved, ivory grips. Serial #87491. Marked Colt PT. F. A. Mfg. Co., Hartford, CT. No factory letter included. $1,500-2,500 Provenance: The Cameron Collection, CO, AZ, NM, MT, WY. After market period engraving. Grey patina, mechanically sound. Shiny bore. Ivory grips are not original, but period replacements.