SIEMENS & HALSKE No. 4001

No. 4001
Wall telephone for battery call in polished walnut case, comprising granular carbon transmitter, watch receiver with two conductor cord, automatic switch hook, induction coil, battery bell (20 ohms resistance), ringing key and terminals.

Net weight about 1.0 kg.



Taken from the Siemens & Halske Telephone Catalogue 1912

Last revised: November 26, 2022

FM2