Manufactured in 1963. Features fixed blade front and adjustable notch rear sights, "U.S." stamped on top of the chamber, the caliber and model designation on the left side of the receiver, along with the serial number and Ruger address marked on the right side. Fitted with a blued magazine with silvered base. Includes a factory letter identifying the pistol as shipped to a U.S. government facility in June of 1963, with the letter stating that no other information is available.