Nikon Ai NIKKOR 135mm f/2.8 MF Telephoto Prime Lens
Very good condition.
Clean optics.
No fungus, no oil separation.
The only flaw with this lens is a barely visible tiny chip on the front glass (does not affect anything). You can see it in the first picture.
Ken Rockwell about this lens: "This 135mm f/2.8 AI offers outstanding optical performance, high speed, and exquisite mechanical quality in a tiny and inexpensive package."