Rare 1941 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. The headset has a damaged outer cable but the inside looks fine. Very hard to find Erdsprechgerät with its original and undamaged case!