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Country:  Germany
Manufacturer / Brand:  Graetz Radio, Berlin Treptow SO36, Vorkrieg
Year: 1927 Category: Loudspeaker, headphone or earphone
Loudspeaker Magnetic loudspeaker (reed) generic.
Power out
from Model: Lautsprecher - Graetz Radio, Berlin Treptow
Notes Art-Deco-Design, oben rund, schwarz
Source of data Radiokatalog Band 2, Ernst Erb
Picture reference Eine Abbildung findet sich im Doppelband "Radio von gestern"

All listed radios etc. from Graetz Radio, Berlin Treptow SO36, Vorkrieg
Here you find 73 models, 65 with images and 60 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.