Manufactured in 1853. An "X" is after the serial number on the barrel, frame, grip straps and cylinder. According to P.L. Shumaker in "Colt's Variations of the Old Model Pocket Pistol," an estimated 250 known London Model 1849s have the "X" serial number that suggest "an experimental nature relating to either the serial numbering system or the process of proofmarking" (page 99-100). Standard markings including "crown/GP/V" proofmarks. Matching numbers are also on arbor pin and barrel wedge. The original case contains a Colt's patent two-cavity bullet mold, James Dixon & Sons powder flask (missing spring), combination tool and Eley Brothers cap tin. It is pictured on pages 146-147 of "Colonel Colt London" by Rosa. With the February 2001 "The Gun Report" that features an article related to the Colt London Model 1849 revolvers.

Very good plus. The revolver has a smooth brown patina with the barrel retaining streaks of original blue finish and the frame retaining traces of original case colors. The grip straps retain heavy amounts of original silver plating in and around the protected areas. Most of the cylinder scene remains. The grip is fine showing high edge wear, a small chip missing near the bottom toe and some minor pressure dents and scratches. Mechanically excellent. The case is very good with the repaired lid showing a couple of long cracks, and there are minor handling/storage marks overall and high spot wear on the otherwise fine original lining.