GOI Teleobektiv 5,5/13,5cm M39

1935, “State Optical Institute” (GOI) Leningrad, USSR

Summarit M 1.4/5cm prototype Nr. A

Summilux archetype, 1958

GOI Jupiter–6 2,8/180mm prototype Kiev

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