These revolvers were manufactured in the 1860s and early 1870s. Chaineux is known to have manufactured revolvers designed to fire up to 20 shots without reloading. This 12 shot example has attractive floral scroll engraving and is marked "J. CHAINEUX BREVETE" on the left side at the breech and "L. de Malbe I Rue Louis a Paris" in Gothic letters on the top of the barrel. It also has a triangular front sight and hammer notch rear sight, smooth grips, and a lanyard ring on the bottom of the butt.