This is a rare example of one of the estimated 50 Fourth Model Figure 8 Revolvers that were manufactured by Savage & North from 1856 to 1859. The revolver is very similar to the Third Model but with an iron frame and flat sides. The number "4" is marked on the loading lever. The top strap is stamped "E. SAVAGE, MIDDLETOWN CT./H.S. NORTH PATENTED JUNE 17TH 1856". The left side of the loading lever is stamped with the two line 1858 patent date (faint). Fitted with smooth varnished walnut grips.