HR - Rubber type
HS - Snap-on type
HN - Screw-in (Nejikomi) type
HK - Slip-on (Kabuse) type
HB - Bayonet type
HE - Extension type
1.[F f=5.8cm 1:1.4 (LogoMark) Nikon F JAPAN U.S. PAT. J.PAT. PEND]
^outline "F" ^logomark of "Nippon Kogaku" (hexagon and lens)
2.[f=5.8cm 1:1.4 Nikon F JAPAN U.S. PAT. J.PAT. PEND]
3.[f=50mm f=58mm 1:1.4 Nikon F JAPAN U.S. PAT. J.PAT. PEND]
4.[f=50mm f=58mm 1:1.4 Nikon F JAPAN]
5.[50/1.4 F NIKKOR JAPAN]
^outline "F"
6.[Nikon HS-1 JAPAN 50/1.4]