Version | Serial no | Date | Screws | Engraving | Notes |
---|---|---|---|---|---|
C | 254001 < 254003 > | 1970 - | 5- | LMIJ | Prototype lens with different serial number. Appears identical to prodution lens. |
C | 350001 < 350004 – 352697 > | May70 - 1971 | 5- | LMIJ | Early batch engraved "Nippon Kogaku Japan". Nine aperture blades. First Nikkor with fully multicoated lenses and the second with CRC. |
C | 360001 < 360146 – 368727 > | 1971 - 1973 | 5- | LMIJ | Engraved "Nikon". |
C | 370001 < 370090 – 376927 > 377067 | 1973 - Jan76 | 5+ | LMIJ | Engraved with ".C" designation to indicate mulicoating. Cross point screws now used. Number of aperture blades reduced from 9 to 7. |