Ruger Old Model Blackhawk, .357 magnum cal. single action revolver.  Serial #54923, mfg. 1964.  Very good condition.  Flat top, three screw, pre-transfer bar.  6 1/2" barrel has an excellent bore, fixed blade front sight and adjustable rear sight.  90% blue finish with muzzle, high edge holster wear and a cylinder index line.  The action locks up solid.  Ruger black eagle in smooth wood walnut grips have some lower edge wear.  Comes with a weave pattern Lawrence 79B SAA style holster and a Lawrence 38 L brown leather belt with cartridge loops.  The leather is in great shape.  A nice early production Blackhawk with some super leather.  C&R OK.