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Secraphone secure telephone handset, about 1941

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Last updated 14 juin 2024
Secraphone secure telephone handset, about 1941
Scrambler telephone handset for privacy unit (later known as Secraphone), c.1941, first developed for government and military use as a secure telephone system and issued by the General Post Office (GPO) in the UK around 1937.
Secraphone secure telephone handset, about 1941
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Secraphone secure telephone handset, about 1941
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Secraphone secure telephone handset, about 1941
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Secraphone secure telephone handset, about 1941
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Secraphone secure telephone handset, about 1941
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