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  OB-Wandfernsprecher Kat.No. 305
  
Ericsson, Schweden


oberer Teil des Apparates mit Mikrofon, Blitzableiter, Wecker und Anschlußklemmen

 

Abbildung aus dem Ericsson-Katalog 1897, Apparat dort unter der Nr. 305 geführt als:

"Telephone for terminal stations
Small size provided with the same accessories as No. 301, but the generator has two magnets only and the handle receiver is of the same construction as those in the combination set. The cells are placed in a special box, which may be hung under the instrument. The box No. 420 is used."