1944, war navy, registered fieldpost letter to the navy location checkout in Wilhelmshaven with mute postal stamp from 17.8.44 and fieldpost R-slip of paper with handwritten indication "XVII" ( = navy field post office Wilhelmshaven 1) as well with service- and cover stamp army postal service no. M 17474 = destroyer Z 5 "Paul Jakobi", good condition, Michel 150, 00