.45 Long Colt. 6.5" barrel length. SN: S&W9557. Blued metal finish with casehardened hammer and trigger and polished walnut Smith & Wesson medallion grips. Double action hand-ejector six-shot revolver mounting adjustable target rear notch and red plastic insert front ramp sights. Revolver mounts a wide hammer spur and trigger, and a pinned barrel. Markings include SMITH & WESSON 125TH ANNIVERSARY to the right barrel, along with a commemorative trademark on the sideplate reading SMITH & WESSON/1852-1977/{SW monogram}/125 YEARS. The standard four-line address mark is struck into the right frame, and the model and caliber markings likewise appear in the standard locations.