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Belgian Wall Telephone with Blake Transmitter...
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Wall Telephone by Siemens & Halske, 1893 onwa...
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Siemens & Halske Model M1903 Wall Telephone, ...
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Gurtl Model Stf. M. 04 Wall Telephone, 1904 o...
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Telephone Handsets and Microphones, 1877 onwa...
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Model M1900 Wall Telephone, 1900 onwards...
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Siemens & Halske Model M1904 Wall Telephone, ...
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Wall Telephone by Berliner, c. 1900...
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6 Early Microphones...
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Demonstration Model of an Early Carbon Grain ...
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Siemens & Halske Naval Telephone, c. 1920...
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Skeleton Telephone by L.M. Ericsson, 1892...
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German Wall Telephone Model M 1900, dated 190...
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Siemens & Halske Intercom Telephone, c. 1918...
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Norwegian Wall Telephone by "Elektrisk Bureau...
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Wall Telephone Set by Schuchhardt, 1896 onwar...
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Intercom Telephone for 5 Lines, c. 1925...
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2 French Wall Telephones, c. 1910...
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German DeTeWe Wall Telephone, c. 1904...
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6 German Dial Telephones...
