1943, war navy, registered fieldpost letter to the marine artillery ordnance in Gotenhafen with mute postal stamp from 29.7.43 and fieldpost R-slip of paper with overprint "Fp XIII" ( = navy field post office Gotenhafen 1) as well with service- and cover stamp army postal service no. M 21879 = Kreuzer "Nuremberg", two-sided opened, otherwise but good condition, Michel 250, 00