SIEMENS & HALSKE No. 4131 | |||||||
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No. 4131
Taken from the Siemens & Halske Telephone Catalogue 1912
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Last revised: May 05, 2023 FM2 |
SIEMENS & HALSKE No. 4131 | |||||||
|
No. 4131
Taken from the Siemens & Halske Telephone Catalogue 1912
|
|||||||
Last revised: May 05, 2023 FM2 |
Loud speaking telephone
for
magneto call consisting of strong walnut case, lacquered, microphone, loud
sounding receiver, large induction coil, alternate current bell with 1600 ohms resistance, specially powerful inductor with 3 magnets, microphone-lever-switch and terminals.