Manufactured in 1941, the Robert Sears inspected Colts marked the transition point from Colt's high polish blue to the parkerization treatment that would become the standard for the rest of the war, with this example having received the blue finish before the transition. Clawson's "Colt .45 Service Pistols: Models of 1911 and 1911A1" lists this pistol in a shipment of 2,500 pistols on 30 April 1941, on p. 396. The left side of the matching numbered slide has the two-line, two-block, patent dates and address with the Rampant Colt between, and the right side of the slide is correctly devoid of markings. The right side of the frame has the U.S. property marking, serial number, and model designation, with "60" on the trigger guard. The left side of the frame has the boxed "R.S." Robert Sears inspection mark, "P" proof, and "T" over "VP" proof on the trigger guard. The top of the slide also has a "P" proof. The replacement blued barrel is marked "P" and "HS" on the lug. Fitted with blade and notch sights, wide checkered hammer, short checkered trigger, long grip safety, replacement arched checkered mainspring housing with a lanyard loop, a full blue "COLT 45 AUTO" marked replacement commercial magazine, and replacement diamond pattern checkered walnut grips.