The Boker Mark I Navy Knife Fixed Blade Tactical Knife w/ Leather Sheath, one of the historical knives from the U.S. Armed Forces, is now followed by this impressive piece. The Mark 1 Navy knife was used by the U.S. Navy, and the main difference between this model and other knives from that era is the large synthetic pommel at the end of the classic leather handle. During WWII, this Knife from Boker was manufactured by H. Boker & Co. in the USA (one of several manufacturers) for the U.S. Navy. This model features an SK-5 high carbon steel blade, and includes an authentic leather sheath. A unique piece with a special history, which is not only ideal for the collector, but also makes an excellent outdoor knife. Serialized. Blade length: 5 1/2''. Overall length: 10 1/4''. Weight: 6 oz.