I'm thinking it's actually the #3 paratrooper due to the loop.
Out cleaning out the garage today and ran across of a bunch of my old stuff from when I was in the military. In all the goodies I found an old Scharade knife I haven't seen on 30+ years! It is an auomatic, 7-8" long. 100% metal, even the handle. Works perfectly!
One side of the blade...