A .22-caliber spur trigger revolver, with 3.25" octagonal barrel and 7-shot cylinder. Brass frame silver-plated, barrel blued and grips of walnut. Revolver marked in a variety of ways including: "Rollin White Arms Co., Lowell, Mass."; "Lowell Arms Co., Lowell, Mass."; or "Made for Smith & Wesson by Rollin White Arms Co., Lowell, Mass.". Approximately 10,000 made during late 1860s.