Circa 1979 6th version of this 200/4 AI: No.763735 200mm f4 TELE LENS with built-in lens hood (telescopic lens shade).
USED CONDITION: focusing is OK, smooth, apertures OK, iris fine nice and snappy. Lens clear and surfaces OK (performs very well) but there is are some very slight fungus marks inside due to age.
Lens has 5 elements in 5 groups 540g NIC Nikon multi coated. 3m minimum focusing distance. Angle of view 12deg 20'
f4-f22 with retractable hood. 52mm filter thread size.