Model 1 3rd Issue was manufactured from 1868 to 1882 and was the last of the .22 caliber tip-up style revolver that Smith & Wesson produced. Half-moon front sight with one line barrel address on the solid rib. Nickel plated barrel, cylinder and frame. Birds head butt. Matching serial number is stamped on the left grip. Matching assembly number is stamped on the cylinder and the inside the left grip frame.