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Luigi Pavese as Antonio Meucci |
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Leda Gloria as Ester, sua moglie |
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Nerio Bernardi as Alexander Graham Bell |
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Greta Gonda as Consuelo Ispahan |
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Osvaldo Valenti as Giovane Giuseppe Garibaldi |
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Armando Migliari as Elisha Gray |
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Rubi D'Alma as Liliana Montes |
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Anna Valpreda as Mary |
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Emilio Petacci as Sam Cloton |
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Nino Pavese as Onorevole Closter |
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Rudi Dal Pra as Ramiro Gomez |
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Olinto Cristina as Wilson |
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Gino Bianchi as Parodi |
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Aristide Garbini as Fleming |
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Oreste Fares as Il medico |
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Nino Marchesini as Il presidente del tribunale |
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Eugenio Duse as Il giornalista |
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Cesare Fantoni as L'avvocato difensore |
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Gildo Bocci as |
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Flora Volpini as |
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Tullio Galvani as |
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Olga von Kollar as |
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Vasco Cataldo as |
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Luciano Seno as |
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Clara Andri as |
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Ernesto Bianchi as |
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Franco Barci as |
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Bebi Nucci as |
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Gina Spicchiesi as |
| Directing | Enrico Guazzoni | Director |
| Writing | Lucio D'Ambra | Story |
| Writing | Guido Cantini | Screenplay |
| Production | Angelo Tarchi | Producer |
| Camera | Fernando Risi | Director of Photography |
| Editing | Pietro Benedetti | Editor |
| Sound | Ezio Carabella | Music |
| Art | Dante Bruscani | Production Design |
