Re: WW II era fighting knife and machete
Funny story--on the way to visit a WWII Navy vet on his birthday a couple of years ago, I picked up a Camillus Mk2 w/sheath for $22 at an antique store--the leather sheath was marked U.S.N. When I walked into his house, I held it up and said, "Lonnie, I bet you haven't seen one of these in a while." He replied, "That's a Mk2, I don't like them; the blade is too long. I had a Mk1 with a short blade--it's over in that junk drawer somewhere." I ended up keeping the damn thing and now have a collection of a half dozen or so.
It is called a "fighting knife" and they were made by several companies. It is WWII vintage--if that is a 7" blade, I believe it is a MK 2. You can pick up a vintage sheath for it on eBay.