20 Kopecks postal stationery with overprint "Pleskau / 20 kop", with advertising slogan 06, black hand stamp overprint, with additional franking Pleskau Michel number 8, blanco card, cancelled "PCKOB * K * 17 10 41", very fine, expertized Dr. Rommerskirchen BPP and E wild boar, photo expertize Robert Brunel VP (2025), "the condition is perfect