In order to make such devices less detectable. The entire body was made from glass. Which also saved precious metal stocks for other uses. Measuring 4.5" across and 0.5" deep.
And in a superb mint, undamaged condition. This one of a small batch of 6 such glass pressure plates. An ex-Waffen-SS Munitions dump hidden deep within the.
In the Calvados region of Normandy. A really cracking piece of surviving German defensive kit from. The Battle of Normandy in 1944..
+++ Please note this offer is for just one of the 6 Glass tops pictured +++.