5 Kopecks special stamp "re-integration", 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, traces of use, there are only a few examples and therefore are they very rare, unsigned, photo expertize Gerhard Krischke, Michel 4.000.-