Manufactured in 1861. The revolver has the distinctive combination of streamlined .36 caliber barrel and fluted cylinder. High polish Colt commercial blue finish with the loading lever, frame and hammer casehardened and the brass trigger guard and back strap silver plated. The one piece grip has a piano varnished finish. The top of the barrel is roll-stamped "ADDRESS COL SAML COLT NEW-YORK U.S. AMERICA.". "COLTS/PATENT" is roll-stamped on the left side of the frame. "PAT. SEPT. 10th 1850" is stamped in one cylinder flute. The serial umber is stamped on the bottom of the barrel lug, frame, trigger guard, back strap, wedge, rear face of the cylinder and bottom of the cylinder pin.