Only about 500 Colt Shooting Master revolvers were manufactured in .357 magnum caliber. The included factory letter confirms the serial number, caliber, barrel length, finish, and June 27, 1939, date of shipment to Hibbard, Spencer, Bartlett & Company of Chicago, Illinois, as a single gun shipment. Elevation adjustable Patridge blade front and windage adjustable rear notch sights, standard markings, checkered hammer, trigger, and grip straps; and checkered medallion grips.

Manufactured in 1915. Elevation adjustable beaded blade front and windage adjustable rear notch sights, two-line address on top of the barrel, "NEW SERVICE 45 COLT" model and caliber marking on the left side of the barrel, matching serial numbers, and checkered hammer, trigger, and grip straps. With checkered Roper grips numbered to the gun.