A Spencer Model 1860 Cavalry Carbine, for .52 metallic rimfire cartridges, the 56cm steel barrel with fixed blade foresight and hinged ladder rearsight, combination trigger guard and lever action, the top of the receiver stamped "SPENCER REPEATING/RIFLE CO. BOSTON, MASS./PAT'D MARCH 6, 1860" and numbered 16576, with smooth walnut fore-end and straight grip stock, the left side set with a saddle ring and bar, a sling swivel and iron butt plate with swivel and retracting tubular sprung magazine