No. 6298, issued in 1959. Reproduction camera for working in aggressive environments, produced by GOI (State Optical Institute). The "Ekranar-2" lens (F = 43.4 mm). Charging roll film 35mm (8 mm error in the site). Weight with a lens of 6.6 kg.

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http://bar90cameras.ru/reprodukcionnyjj-fotoapparat-1959-g-6298

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