According to The Complete Nikon System by Peter Braczko, there were four manual focus versions of this lens. The first was never officially in production, though likely a few are in circulation. The second variation (first production) comprises 176111 through 178500. Next version came around 1982, and last version in 1985.
There are a couple differences in the last version. On the last, a built in protective filter was added to replace the 122mm filter thread at the front, with the addition of a slide-in gelatin filter. The pictures on the MIR site are all from the first production version, and not the later two versions.
It is a lens I always wondered about using, though I think I will continue to be happy with my 180mm f2.8. The difference is that 180mm has a 72mm front thread, so you can imagine the lens size difference to go up to a 122mm front thread on the 200mm f2.0.
Ciao!
Gordon Moat
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