What we just received is one of the most rare knives made by Gerber and this one is NIB. The Gerber Neptune Orange Handled and Blade numbered Dive Knife. Knife was made by Gerber form 1969-1972 and few were made. The sheath is boxy and made of heavy rubber and was designed for use by professional hard hat divers and not necessarily for skin or scuba divers as the sheath is bulky and large, the yellow handled Mark II was designed for non commercial divers. This knife comes complete with sheath, leg straps, sharpening steel and blade numbered knife # 02202. Blade and handle are mint, no stains, scratches or paint loss. Sheath and straps are all correct and never used, steel is marked Gerber and all correct. Rarely are these found in unused condition as most were put to use and the number of them made was low. The box is also correct for the knife again, nearly ever found in this condition. Rarely do you even find a NIB one like this on Ebay.