.45 ACP. 6.5" barrel length. SN: S159725. Blued metal finish with casehardened hammer and trigger mounting Smith & Wesson medallion walnut grips with boxed checkering. Double action hand ejector six-shot revolver mounting adjustable target rear notch and Patridge front blade sights atop a heavy barrel with matted barrel rib. Revolver features a pinned barrel in a five-screw frame. The markings include standard make and model stamps with Smith & Wesson's monogram trademark to the sideplate and the right barrel marked 45 CAL. MODEL 1955. The serial numbers match on the cylinder, star extractor, and on the barrel.