1940, 2 army postal service official letters with postal stamp WILHELMSHAVEN 1 from 1.3.40 respectively with mute stamp from 16.5.40 as well with cover stamp "free by exemption providing franking privilege Reich" and service stamp army postal service no. M 24212 = destroyer "Z 20" "Karl Galster", the at that time in the North Sea in the line of duty was, good condition