This pistol was manufactured in 1915 as part of a lot of 500 pistols for the U.S. Navy. These pistols were shipped from Colt to the Brooklyn Navy Yard on March 5, 1915, for issue to the Naval Militia. They were the last Navy contract Colt Model 1911 pistols with the distinctive marking. "MODEL OF 1911 U.S. NAVY" on the right side of the slide. The left side of the slide is roll-stamped with the Colt 1897-1913 patent dates in a two-line block followed by the Colt legend and Hartford address in two lines. The Rampant Colt trademark is roll-stamped behind the left slide serration. The serial number, "No 109751" is stamped on the right side of the frame behind the slide stop hole. The left side of the frame is roll-stamped: "UNITED STATES PROPERTY" ahead of the trigger guard. The frame and slide markings utilize Roman style (serif) letters. The Ordnance final inspection mark which consists of the initials "GHS" (Maj. Gilbert H. Stewart) in a round monogram is stamped above the magazine release. The "H" provisional inspection mark is stamped on the top of the frame in front of the disconnector hole, on the end of the slide above the slide stop and on the top of the barrel chamber. A "P" proofmark is stamped on the top of the chamber below the "H". The "P" and "H" marks are both oriented perpendicular to the axis of the bore. The pistol has the second style recoil spring guide adopted in 1915, first style firing pin stop, 1911 style slide stop, 1914 style safety lock with thick thumb-piece and machine cut and long hammer with rounded rear edge. The two-tone magazine has the flat base adopted in late 1915. The pistol has the deep blue "dull finish" adopted in early 1912 and utilized until 1917. The two-piece, oil-finished walnut grips are checkered with diamonds surrounding the stock screws. The pistol is accompanied by two full-blue WWII magazines.