SIEMENS & HALSKE No. 4138

No. 4138
Loud Speaking telephone for magneto call similar to No. 4136, but on iron frame with battery box for 4 large dry-cells, type T1 (or 4 storable cells type LT1).

Net weight (without cells) about 50 kgs.

Taken from the Siemens & Halske Telephone Catalogue 1912

Last revised: May 05, 2023

FM2