Original U.S. Navy WW2 KA-BAR marked deep sea diving knife with brass scabbard.  The knife has a one side serrated blade and the knife screws into the scabbard.  The hilt is wood with a brass pommel.  This A standard issue knife for all US World War 2 deep sea divers.  This knife is marked as made by Union Cutlery Co. Olean NY. Specifications: Total knife length (not including scabbard): 33 cm (13 inches) Blade length: 18 cm (7 inches) Hilt length: 15 cm (6 inches) Scabbard length: 21.5 cm (8.46 inches)