This was a pre-AI Nikkor (not the f/16 "Nikkor_N" version). Black and silver metal body. Rubber focus grip.
Infrared Performance Notes
As is typical with all the other K series pre-AI Nikkor lenses, this one is pretty lackluster for infrared. I recommend avoiding any of these old lenses if you see that rubber focus ring, so far that seems to be the best indication of IR quality that I can tell.