Boker - Congress Pocket Knife - Tortoise Shell -- The Congress Tortoise Shell Pocket Knife includes sheepsfoot, spear, and twin pen blades. This stunning collection of our most popular patterns features tortoise celluloid handles and carbon steel blades. The blade etch and shield have been resurrected from the Boker archives and the tang stamp represents the current manufacturing identification. An excellent choice for the collector or everyday use. 3 5/8" closed.