NIKKOR-Q Auto 1:4 f=20cm No.170364

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• «Nippon Kogaku Japan»
• Production year 1961
• First 20cm lens was No.169211
• 4 elements in 4 groups, picture angle 12°20′
• Built-in retractable lens hood with chrome button
• Black front ring, filter ∅ 52mm
• Lens data engraved on chrome lens barrel
• Scalopped focusing ring
• Distance scale graduated in feet from 10 ft. to infinity (∞)
• White «LENS MADE IN JAPAN» on black focusing ring («M» with slanted sides)
• Black «PAT.PEND.» on chrome lens barrel
• Ribbed aperture setting ring
• Aperture scale f/4 to f/22, 6 iris blades
• No bayonet screws
• Dimensions approx. 73mm ∅ x 161.7mm
• Weight approx. 560g
• NIPPON KOGAKU 52mm snap-on front lens cap
• NIPPON KOGAKU F rear lens cap
• Nikon 52mm L39 screw-in filter, chrome rim

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