The Mark II is one of the best-selling knives of all time. First introduced in 1966, this tactical knife is serialized for collectors. This one has a satin finished hand ground double-edged partially serrated blade, .241" blade stock and .949" blade depth, hidden tang construction with a black aluminum handle. This knife is Serial #E8750S and was made in 1987. Comes with a black nylon sheath. Excellent condition.