Manufactured in 1900, the first year of production for Colt's first commercially available semi-automatic pistol. The left side of the slide is marked with the standard two-line, two-block patent date and address, with the circled Rampant Colt at the rear. The right side has the standard two-line caliber marking and the serial number is marked on the left of the frame. The sight features the early pattern plunge-milled slide serrations at the rear, seen on pistols only below approximately serial numbers 1400-1500. It is fitted with blade front and notch rear sight safety in the original configuration, smooth walnut grips which were standard until approximately serial number 2449, and a nickeled magazine with patent date on the base.

Exceptionally fine, retains 80% plus of the original high polish blue finish, as well as 75% plus of the vibrant original case colors and nitre blue, with the balance having thinned to mostly a smooth grey patina, mostly noticeably on the grip straps and leading edges of the slide. The grips are very fine with some scattered light dings and scratches. Mechanically needs adjustment as the firing pin is absent. An exceptionally fine example of Colt's first semi-automatic pistol!