5 Kopecks postal stamp, two values reverse on cover with red one-line overprint "PLESKAU", cancelled "PSKOW -a -9 8 41", properly franking, the red single line cancel became after the occupation on all postal service pieces the in mailboxes found were to authority order mounted, stamps small defects - likewise the cover, there are only a few examples and therefore are they very rare, expertized Dr. Schultz, Keiler BPP, Zierer and photo expertize Walter Zirath BPP, Michel 4.000.-