Manufactured in 1931. Blade front and adjustable notch rear sights, the two-line address and patent dates on the left side of the slide, the Rampant Colt ahead of the serrations, and the Colt Ace logo and caliber markings on the right. The frame is marked "20" on the right side of the trigger guard, "3/VP" on the left and fitted with a checkered short trigger, wide checkered hammer, checkered arched mainspring housing, checkered front strap, checkered wood grips, and a two-tone magazine with Colt Ace marked base. The included factory letter confirms the caliber, barrel length, finish, and special order 4 1/2 to 4 3/4 pound trigger pull, as well as an individual shipment to G.H. Collins on 14 July 1931. Provenance: The Dr. Robert Azar Collection