Ruger Blackhawk, .357 mag. cal. single action revolver. Serial #55281, mfg. 1964. Excellent condition. Wonderful and clean Old Model with the three-screw frame. 6 1/2" barrel has an excellent bore. Bluing is 99%. Great mechanics. Ruger monogrammed smooth walnut grips are excellent. Adjustable rear sights. Ramp front sight. Nice one! Gunrunner West item.