This is an example of a U.S. Navy Colt Model 1911 Automatic Pistol that was shipped to the Brooklyn Navy Yard as part of a lot of 1,000 pistols on 1 June 1912. Fitted with blade front and rounded notch rear sights, with the two line, two block address and patent marks on the left side of the slide with the circled Rampant Colt behind the serrations and "MODEL OF 1911. U.S. NAVY" (with serifs) on the right side. The frame bears Walter G. Penfield's "WGP" inspector mark near the correct early magazine catch, "UNITED STATES PROPERTY" on the front left, and "No.2815" on the reverse. Fitted with a wire checkered hammer, long smooth trigger, short grip safety, smooth lanyard base mainspring housing and checkered grips with diamond patterns around the screws. The barrel is a later production replacement marked "Colt 45 Auto" "P" and "G" on bottom.