| Serial number | Nippon Kogaku Japan | Nikon | slot screw | cross screw | lens coating | scalloped grip | rubber grip | AI | fork | optical formula | year of production | extra |
| 970001-970110 | + | - | 3 | - | ? | + | - | - | triangular | 1? | 1965 | prototype |
| 970111-985xxx | + | - | 3 | - | + | + | - | - | + | 1 | 1965-1967 | threaded aperture ring |
| 184711-195000 | + | - | 3 | - | + | + | - | - | + | 1 | 1967-1968 | detachable ring A-2 |
| 195001-216000 | + | - | 5 | - | + | + | - | - | + | 1 | 1968-1971 | + |
| 220001-243000 | - | + | 5 | - | + | + | - | - | rounded closed | 2 | 1971-1972 | + |
| 250001-260000 | - | + | 5 | - | SC | + | - | - | + | 2 | 1972-1973 | + |
| 260001-300556 | - | + | - | 5 | SC | + | - | - | + | 2 | 1973-1976 | + |
| 350011-385xxx | - | + | - | 5 | SIC | - | + | + | + | 3 | 1976-1977 | detachable ring A-1 |
| 400001-425xxx | - | + | - | 5 | SIC | - | + | + | rounded open | 3 | 1977-1978 | AI |
| CRT 1 7xxxxx | + | - | - | - | + | + | - | - | - | - | 39 mm. | |
| CRT 2 8xxxxx | + | - | - | - | + | + | - | - | - | - | 39 mm. M=1/5 | |
| NASA 1 | + | - | 3 | - | + | + | - | - | triangular | 1 | 1969 | ? |
| NASA 2 | - | + | - | 5 | + | - | + | + | rounded open | 3 | 1976 | ? |
| Leica | - | + | - | - | SIC | - | - | - | - | 3 | ? | M-bayonet |