The Model 1 First Issue revolver was manufactured by Smith & Wesson from 1857 to 1860 in six various types. This particular revolver is a Model One, 1st Issue, 6th Type and features a blade front and notch rear sights, 7 round un-fluted cylinder, spur trigger, silver plated brass frame with blue barrel and cylinder, and fitted with two-piece smooth rosewood grips which are numbered to the gun. The top of the barrel is marked with the one line address and the cylinder is marked with the 1855 and 1858 patent dates.