Co., and stamped with an ‘S’ on the top of the floor plate. The pistol is complete with a full-blue WWII production magazine manufactured by the Schovill Mfg. The slide is correctly not serial numbered and the right side of the receiver is not stamped with the Ordnance Corps escutcheon found on Colt, Ithaca and Remington Rand Model 1911A1 automatic pistols. The left side of the slide is roll-stamped with the ‘USS’ monogram followed by ‘U. An identically sized ‘P’ proof mark is stamped on the top of the slide ahead of the rear sight facing the right. A small ‘P’ proof mark is stamped behind and below the magazine release. The left side of the receiver is stamped with distinctive Ordnance final inspection mark consisting of the initials ‘R.C.D.’ (LT. The right side of the receiver is stamped ‘UNITED STATES PROPERTY/No 1062419’ behind the slide stop hole and ‘M 1911 A1 U.S. The barrel has the ‘HS’ (High Standard) marking on the right side of lug and a ‘P’ proof mark on the left side. The front of the barrel bushing has the round milling marks found on early US&S pistols. In addition to the stamped trigger, the pistol has a narrow spur hammer with coarse knurling checkered mainspring housing and checkered safety lock and slide stop. grips are the checkered brown plastic with reinforcing rings around the screw holes and interior strengthening ribs and mold marks. This ‘Type III’ pistol has the distinctive US&S blue stamped trigger and Du-Lite finished slide and receiver. They are second in rarity to Singer who only produced 500 1911A1 pistols. Some of later US&S serial numbers were duplicated by Colt during this period prior to their contract being cancelled. only manufactured 55,000 Model 1911A1 pistols in total between January and November 1943, from serial number 1,041,405 to 1,096,404. Since the A1 was released in 1924, my guess is that it was rebuilt/modified to a1 specs sometime later in life. (US&S) of Swissvale, Pennsylvania, in 1943. The serial number seems to indicate the frame is definitely 1918 vintage, but the slide is clearly marked m1911a1. contract Model 1911A1 semi-automatic pistol that was manufactured by the Union Switch & Signal Co.

Colt m1911a1 serial number worth