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| K 250
The 'General' Intercommunication Telephone Consisting of 'Hunningscone-Deckert' Microphone
Induction Coil, Double Pole 'Ring' Receiver, Call Bell, Ringing Key, and Line Selector.
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904) |
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Last revised: July 30, 2025FM2 |