Almost a famous as its Big Brother the Gerber Mark I was a spin off of the Gerber Mark II that started it famous reputation during the Viet Nam War. This mark One is NIB, never used, carried or sharpened. Serial number J8695S, I would date in the late 1980’s as it features the Cordura sheath as opposed to the leather. Box is proper to the knife and is in excellent condition showing very little storage wear. These as any of the older Gerber made knives are continuing to appreciate in value.