The Third Model Dragoon can be quickly distinguished by its round trigger guard and rectangular cylinder stops, and was the most widely used of Colt's massive "horse pistols" that began with the famous Colt Walker. Around 10,500 Third Models were manufactured in 1851 to 1861. Many of these were used in the Old West and into the Civil War by men on both sides. Manufactured in 1853. Features a dovetailed blade front sight, empty rear dovetail for a notch rear sight, the New York barrel address, "JP" on the left side of the barrel lug, single letter inspection marks on various components, "COLTS/PATENT/U.S." on the left side of the frame, matching serial numbers (including the grip inlet), and a series of silver plaques with light engraving on the grip.