Manufactured between 1955 and 1962 with a futuristic, space age design that utilized a cast aluminum frame in lieu of the standard steel frames of the day. The Wolverine is a straight blow-back design that uses a round bolt inside the upper part of the frame, with exposed cocking knobs on the rear of the frame and an exposed hammer. It was designed by Robert "Bob" Hillberg (1917-2012), an intuitive firearms designer who worked for High Standard Mfg. Co. as the head of research and development, and was involved in a number of different design projects including the COP .357 Derringer pistol and M37 machine gun. Features fixed front and rear sights, standard markings, and checkered grips. Includes a reproduction Whitney box.