ha ha, it is funny to see this old thread.
Since posting the thread, I sold my mint NK F and the black Apollo.
Then I had a bout of sellers regret, and re-bought a black NK F (with a minor dent due to the Photomic meter) and a not-mint chrome Apollo.
But, also acquired a mint black Nikon F. So, I went from 2 F's, to zero and now three.
Such is the way with F ownership.
35mm : Leica 1A, M4, M9, R6.2, Nikon F/F2, Xpan II
6x6cm: Hasselblad 501CM, 203FE, SWC, Rolleiflex 2.8F, Wide
6x9cm: Fuji 690II/III, Bessa II, Super Ikonta 531/2
4x5in : Technika Master, Crown Graphic