This is a very nice example of a Model Number 1 2nd Issue revolver manufactured from 1857 to 1860. This Model 1, 1st Issue 2nd Type revolver features the rare "bayonet" or "flat spring" barrel latch found only on first approximately 1,130 Model Number 1 1st Issue revolvers (1st and 2nd Type). The revolver also has the revolving recoil plate attached to the frame. The top of the barrel rib is marked: SMITH & WESSON SPRINGFIELD MASS" and the cylinder is marked with the early "PATENTED APR. 3 1855" marking around the center. The matching serial number is marked on the butt, rear of the barrel, the front face of the cylinder and on the inside of each grip panel. Blade front and notch rear sights, 7 round un-fluted cylinder, square flared butt, blue barrel and cylinder, silver plated brass frame and fitted with smooth varnished rosewood grips.