NATIONAL TELEPHONE COMPANY
B320
Battery Wall Set

Pattern No. B320

LOUD SPEAKING WALL SET

Comprises - Loud Speaking Receiver, Pattern No. B75 and Induction Coil, the Receiver being mounted on and the Coil enclosed in, a Walnut block as illustrated below; also a Hand Transmitter, Pattern No. B10.

Was B52 in the 1903 Catalogue.

 
 
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Last revised: July 07, 2020

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