A .36-caliber double-action percussion revolver, with 7" octagonal barrel and 6-shot cylinder. Frame marked "Savage R.F.A. Co./H.S. North Patented June 17, 1856/Jan. 18, 1859, May 15, 1860". Approximately 20,000 manufactured between 1861 and 1865. About 12,000 purchased by U.S. Government.