Description Ruger Pre-Warning 3 Screw Old Model Blackhawk chambered in .45 Colt with a six-shot cylinder and a 7.5″ barrel. Manufactured between 1971 and 1972 with serial number 45-02446. Blued barrel, three screw frame, fluted cylinders, single action trigger, and hammer. Smooth wood grips with Ruger medallions. Adjustable rear U-notch and fixed front blade iron sights. Comes in a factory Ruger box with manual. Must ship to a FFL or C&R holder. Conditon: Very Good with scratches, light handling and operational wear. Faint cylinder turn lines. Bright and clean bore with strong rifling. The side of the bottom of the box has ripped off. Barrel Length: 7.5″ Serial: 45-02446 Manufacturer: RUGER Caliber: .45 Colt Model: Old Model Blackhawk Year-Range 1971-1972 Book# 03426