Manufactured between 1873 and 1876. Fixed sights, with the rib marked "XXX STANDARD 1872" and the one line address/patent mark on the left side of the barrel. Spur trigger and smooth rosewood grips on bird's head butt.

Produced between 1876 and 1888. Fixed sights, with standard markings on top of the barrel, spur trigger, checkered hammer.

Made between 1877 and 1879. Blade and notch sights, with the two line address and patent markings on the rib flanked by Maltese crosses, blue trigger guard, casehardened hammer and trigger, checkered barrel latch.