Marked on blade office of strategic service, first Applegate combat dagger design, Japan. Knife has brass and wooden made handle with a brass hand guard, made with steel blade and etched 519 on blade, comes with leather carrying case. Possibly never used. Comes in white cardboard box, approx 12 inches long and 1.25 inches tall Knife is approximately 12 inches long with blade being 7 inches long and 1.25 inches wide, with a 5 inch long handle. Comes with original invoice. Custom dagger knife. Custom knife, knives, hunting knives, hunting accessories, brass knives, wooden knives, custom hunting knives, leather cases. Mens accessories, steel knives. 12 LC