Manufactured in 1903. Fixed blade front sight, one line Hartford address on top of barrel and "(BISLEY MODEL) / COLT FRONTIER SIX SHOOTER" roll engraved on left. The frame has the two line, three date patent markings beside the circled Rampant Colt on the left side, "1" above the firing pin hole and "1971" assembly number. Matching numbers on the frame, trigger guard and backstrap. Wide, low hammer spur with wide trigger, characteristic "humpback" grip and checkered hard rubber grips with Rampant Colt emblem at the top.