Summicron 2/5cm SOOIC M39

1952, Thorium glass element

Jupiter 9

1957, KMZ

GOI Mercury–1 2/5.2cm prototype M39

1957, “State Optical Institute” (GOI) Leningrad, USSR

GOI Jupiter-8 2/5cm prototype Kiev

1948, “State Optical Institute” (GOI) Leningrad, USSR

GOI 2.9/38-78mm Soviet space prototype M42

1975, “State Optical Institute” (GOI) Leningrad, USSR