Unknown manufacture date, likely late 20th century. The barrel is marked "Colt Bisley" and "45 COLT" on the left. The frame has "SA00" on the bottom, "K/4" in the hammer well, "11" on the rear under the grip, and the 1871, 1872, and 1875 patent marking on the left. Provenance: The Charles Marx Collection

Excellent with nearly all of the finish with a frosted appearance, cylinder drag lines, a few dings and scratches, age lines in the grips, and generally only minor wear. The loading gate is a bit sticky, but the action functions fine.