The first 1600 or so Nikon F2 bodies did not have the stainless steel insert for the strap lugs. So much for the term Nikon F with F2 cosmetics! I have two of these early F2 bodies, both bought at a camera show. No premium paid for them, just dumb luck. One was $125 with the early DP-1.
I prefer and use the term "Apollo Nikon F" as I have since the 1970s when the term was coined. Or we could use the phrase Nikon F2 with Nikon F cosmetics for these early F2 bodies.