1944, war navy, registered fieldpost letter to the Command the war navy in Berlin with mute postal stamp from 30.9.44 and fieldpost R-slip of paper with overprint "Fp XXVI" with UB "b" ( = navy field post office Kiel 1 ) as well with service stamp "marine post office Hamburg army postal service. No. M 24932" and cover stamp army postal service no. M 24932 = More commanding admiral the submarines, good condition, Michel 150, 00