Boker Congress Tortoise Celluloid. 3 5/8" closed. Carbon steel spear, sheepsfoot and twin pen blades. Master blade features old style Tree Brand etching. Special tang stamp represents the current manufacturing identification.Tortoise celluloid handles that is the oldest artificial material going back to 1869, even today its translucent colorful appeal is one of the most attractive materials, with nickel silver bolsters and historical inlay shield. Made in Germany.Shipping $5.75