Manufactured from 1870 until 1874 with a total production of approximately 32,000 revolvers. This is the second variation of the No. 3 American. The top of the barrel rib is marked with the one line address and five patent dates. The rear face of the cylinder and the barrel latch are marked with the assembly number "540". Pinned front sight with fixed rear sight. Blue finish and fitted with smooth, two-piece walnut grips.