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Николай Симонов as Ivanov, factory worker and inventor |
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Пётр Кузнецов as Dukalskiy, engineer from Moscow |
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Наталья Разумова as Nastya, Ivanov's fiancée |
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Сергей Троицкий as Kraft, technical office representative |
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Petr Shidlovsky as Babkin, jewelry shop owner |
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Александр Ржешевский as Important man |
| Camera | Александр Сигаев | Director of Photography |
| Art | Aleksandr S. Goncharski | Production Design |
| Directing | Vladimir Kasyanov | Director |
| Writing | Сергей Гарин | Screenplay |
| Camera | Александр Рылло | Director of Photography |
