SIEMENS & HALSKE No. 4091

No. 4091
Wall telephone for magneto call consisting of a walnut box, lacquered, a microphone, large spoon receiver, automatic switch hook, induction coil, alternating current bell with 300 ohms resistance, specially powerful inductor with 3 magnets and terminals, for calling across about 33,000 ohms.

Net weight about 5 kgs.

See also Telephone No. 4092.

Taken from the Siemens & Halske Telephone Catalogue 1912

Last revised: November 26, 2022

FM2