1942, war navy, registered fieldpost letter to the marine artillery ordnance in Gotenhafen with mute postal stamp from 18.11.42 and fieldpost R-slip of paper with stamp overprint "Fp XIII" ( = navy field post office Gotenhafen 1) as well with service- and cover stamp army postal service no. Sch. 34487 P = 16. Battr. Navy flak battalion 219, good condition, Michel 250, 00