Doppelfernhorer B headset for Panzer troops dated 1940

Hard to find early(!) Wehrmacht issued Doppelfernhorer B (Dfh. B)or headphones model B dated 1940. This model headphones is mostly known for its use by Panzertroops. The end of the cable connecting to the plug looks to be damaged but this should be a easy repair if you want to actually use them. Excellent 1940 dated example which could be the finishing touch for an armored vehicle display!