Also known as the Improved Model 1911A1 Pistol, the Transitional 1911s were made in 1924. While they retained the nomenclature markings of the 1911, they were equipped with the signature features of the 1911A1 which included the dished frame sides, shortened trigger, elongated grip safety, and arched mainspring housing. Round blade front and flat top notch rear sights, with the two-line, two-block address and patent markings divided by the Rampant Colt logo on the left side of the slide, "MODEL OF 1911.U.S.ARMY" on the right, and "H" above the firing pin stop plate. The frame bears the circular Walter Gordon "WTG" inspection stamp, with the short milled checkered trigger, wide checkered hammer, long grip safety, checkered mainspring housing, "R" marked two-tone magazine, and a conjoined "HP" marked barrel.