1944, 2 fieldpost service letters one correspondence of a finn. Soldiers to a German. Sergeant with the army postal service number 28534 C, a cover with postmark Helsinki 1. 6. 44 and red destination transit cancel "army postal service F", 2. cover with violet finn. Fieldpost stamps and German. Luftpostzuschlagsmarke rouletted in the pair, used with some indistinct postmark from 31. VI. 44, small margin traces, in this combination rare!