1) Spanish Remington Model 1871 socket bayonet numbered "2150". (blade length: 21 1/2", OAL: 24"). 2) U.S. Model 1873 socket bayonet (blade length: 18", OAL: 21"). 3) U.S. Model 1873 socket bayonet (blade length: 18", OAL: 20 3/4"). 4) U.S. Model 1873 socket bayonet (blade length: 18", OAL: 21"). 5) U.S. Model 1873 socket bayonet (blade length: 18", OAL 21").