Wehrmacht 'Dfh.a' Headphone (Doppelfernhörer). The headphone is marked with 'Dfh.a' indicating 'Doppelfernhörer' model 'a'. The Dfh.a headphone is the standard type Wehrmacht headphone used with most radio types. The headphones are maker marked 'bmm' and dated '40' indicating production in 1940. The headphones are complete with their original wire and plug. Nice piece of equipment in good used condition!