Field post standard stamp from 7.2.44 on correctly franked registered cover the 2. weight step over 20 to 250 gr with mixed franking from pair over 12 Pfg with 30 Pfg Hitler and stamp "through German army postal service" the Omni-Promet A. G. Belgrad to Hamburg with K-no. 541 in the registration label and stamp ( = army letter point 560 in Belgrad) and with arrival postmark Hamburg 13 from 10.2.44, good condition