1944, war navy, registered fieldpost letter (DIN A5 size) to the department physician the 6. M. L. Battalion in Varel with mute postal stamp from 15.4.44 and fieldpost R-slip of paper with stamp overprint "Fp XIII" ( = navy field post office Gotenhafen 1) as well with senders stamp "remote control association / long-distance boat "flash" and cover stamp army postal service no. M 24212 = destroyer Z 20 "Karl Galster", legitimate condition with tears, Michel 250, 00