GERBER BOWIE KNIFE Gerber Bowie Knife mdl. #5978 that is in excellant, never used condition, marked 'PRE-PRODUCTION PROTOTYPE'. Features a 9 1/2" extra thick blade (1/4") . Overall length is 14 3/4". Brass guard with Coffin shaped Hypalon handle and a heavy duty black Cordura sheath. There is no box or paperwork since this was a Pre-Production Prototype and was never meant to be sold to the general public. However, the knife has never been used or resharpened. Gerber brought out this design in 1991 and ceased manufacturing it in 1998.