1938 and 1940, cover with 12 Pfg Hindenburg and postal stamp Wilhelmshaven R++stringen 1 from 5.1.38 as well with senders note destroyer Hermann Schoemann, Wilhelmshaven, and army postal service cover with mute stamp from 1.2.40 from Wilhelmshaven as well with neutral cover stamp and senders note army postal service no. M 13029 = destroyer "Z 8" "Bruno Heinemann", good condition