.32-caliber spur-trigger revolver, with 3" round barrel. Frame silver-plated brass and scroll engraved; remainder blued or plated, with walnut grips. Barrel marked "B.A. Co. Patented April 14, 1863". Approximately 10,000 manufactured in 1863 and 1864. Cylinder has five individual tubes that slide forward to open for loading and then ejecting spent cartridges, as a way to circumvent STW's Rollin White patent on a cylinder bored through end-to-end.