| Version | Serial no | Date | Screws | Engraving | Notes
|
|---|
| F | 140051 < 140113 – 142028 > | Oct 59 - | 0 | PAT PEND | Early type has several features found on tick mark lenses:
- Engraved PAT PEND with no LMIJ.
- High gloss metal finish.
- 1mm extension to lower edge of aperture ring, insufficient clearance to fit Nikkormat FT series.
Unlike other early non-tick mark lenses it does not have 9 aperture blades, only 6 which was the standard for most Nikkors during the early 1960s. The upper barrel extends directly to the filter ring. Start serial number taken the maximum aperture of the lens.
|
| F | < 142506 – 148388 > | - | 0 | LMIJ PAT PEND | As before but now engraved LMIJ.
|
| F | < 148508 – 150016 > | Mar 60 - Jun 60 | 0 | LMIJ PAT PEND | As before but with normal aperture ring.
|
| F | < 151068 – 157921 > | Jul 60 - | 0 | LMIJ PAT PEND | Upper barrel thicker, stepping in about 3mm below the filter rim. The upper focus ring is also wider to accommodate the wider ring. Many lenses lack the LMIJ engraving, possibly made for the Japanese market.
|
| F | < 158087 – 177603 > 179051 | - Jan 62 | 0 | PAT PEND, LMIJ | Focus scale now in feet only, LMIJ moved to the focus ring. A few were also made for the Japanese market with the focus scale in m only, these lenses lack the LMIJ marking.
|
