These knuckle duster revolvers were designed by Frenchman Louis Dolne in the late 1860s and combine three fearsome weapons: a revolver, brass knuckles, and dagger. They were popular with the French criminal gangs of the late 19th century and early 20th century. These weapons were perfect for the smash and grab and quick hold-ups often employed in the streets of Paris and other cities. The guns were likely scarcely actually fired but served as a legitimate threat to guarantee compliance with demands. This example has a 2 3/4 inch folding blade, spurless hammer, 6-shot fluted barrel cluster and the serial number marked above "DOLNE-B[illegible]/INV. BREVETE" on the right side of the scarce iron frame.