Blade front and frame notch rear sights, standard frame markings, the "UNITED STATES PROPERTY" marking on the underside of the barrel, and partial Rampant Colt on the left side plate. The revolver features multiple (late 20th century done) professionally cutaway sections to reveal the inner workings. Smooth walnut grips, lanyard loop, and U.S. property number "131/832" on the butt. There is a small removable collection marking on the trigger guard.

Round blade front and flat top "U" notch rear sights, two-line, two-block Colt address and patent marking on left side of slide separated by the Rampant Colt, "eagle head/S12" inspection mark on the left side of the frame, wide checkered hammer, short grip safety, and flat, smooth mainspring housing with lanyard loop. The pistol features multiple cutaway sections to showcase the inner workings, professionally done in the late 20th century. There is a small removable collection marking on the trigger guard.