Colt 1905 USMC Marine Corp Revolver, 38 caliber, Civilian Model, not marked USMC on the butt. Lanyard loop hole plugged. Smooth walnut grips likely old replacements. Some blue only in the protected areas, otherwise browned to a nice even patina. VG-VG+ bore. Only 929 Commercial Models were built. This one includes a Colt factory letter.