Rare 1940 dated Erdsprechgerät

Rare original Erdsprechgerät in good used condition. The Erdsprechgerät was a device used in the case of a broken field phone connection due to shrapnel for instance. The Erdsprechgerät is complete with the microphone and headset. I have opened the set and it looks to be complete inside. The headset has looks fine and complete. Very hard to find Erdsprechgerät with its original and undamaged case!