Auto NIKKOR Telephoto-Zoom 1:4 f=85mm ~ 1:4.5 f=250mm No.174528.

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«Nippon Kogaku Japan»
production year 1968
first 85-250mm lens was #174xxx, last #174661
serial number with dot
15 elements in 8 groups
picture angle 28°30′ to 9°50′
chrome front ring, filter ∅ 82mm
focusing ring with tick marks, distance scale graduated in feet from 13 ft. to infinity (∞), orange scale with close-up lens from 7.5 to 13 ft.
one-ring-zoom, f-scale 85, 105, 135, 150, 180, 200, 250mm, with dash marks
«LENS MADE IN JAPAN» on black aperture ring («M» with vertical sides)
aperture scale f/4 to f/16
6 iris blades
bayonet fixed by 5 slot screws
dimensions approx. 89mm ∅ x 304.5mm
weight approx. 1,960g
82mm close-up lens with orange stripe
NIKKOR 82mm screw-in lens hood, series IX filter adapter
NIKKOR 100mm slip-on front lens cap, chrome
NIPPON KOGAKU F rear lens cap