Wehrmacht 'Mouse' Morse Key (Morsetaste TKP "Maus"). The Morse key 'Mouse' was mostly used with radios in armoured cars and tanks. The device is nicely maker marked with 'esv' indicating production by the company of 'Karl Schieder' from Nürnberg. It is nicely 'WaA' marked as well. The device is complete with its original wire and plug. The set is in good used condition. Very nice and quite scarce piece of equipment!