The Mark II by Gerber is one of the best selling knives of all time. First introduced in 1966, this tactical knife is serialized for collectors. Black finished partially serrated double edged blade, .260" blade stock and .944" blade depth, hidden tang construction. Black aluminum handle. Black nylon sheath. S/N K0666S. Has scuffs and scratches, has been resharpened and the serrations on one side are gone, fair condition.