Original early Vietnam (pre-1967) Pilot or air crew survival knife. From 1967 on these were marked and dated on the pommel. Blade is just under 5" long. It's been lightly sharpened, has a good edge, finish is about 50%, no rust or pitting. Guard is straight and tight. Leather grip is excellent. Pommel is also tight and has most of the original navy gray paint intact.  Original leather sheath. Very good with intact stone w/good snap.  Thanks for looking, shipping will be 9.85 in the US.kw:trench, dagger bayonette, USMC, airborne