Norwegian divers took part in a spectacular action for Böker, parts of the armor of the German battleship Tirpitz recovered. The steel parts were in surprisingly good condition thanks to the cold and pressure. From these well-preserved steel parts, the powerful blade was forged from 300-layer damascus with the "Great Pyramid" pattern. Böker made an extremely durable blade with a hardness of 61HRC by combining Tirpitz steel with carbon tool steels. The blade jumps very powerfully and without play. An attractive hardcoat anodized handle made of high-strength light metal gives the knife not only a beautiful design but also a very good feel. Handle inlay made of selected, local walnut wood with the original coat of arms of the battleship. With functional, adjustable belt clip (tip-up/tip-down). Hardcoat anodized handle made of high-strength light metal. With adjustable belt clip (tip-up/tip-down). With consecutive serial number and collector's box with certificate. A very special piece that makes history tangible. The thumb studs are screwed on.