20 Kopecks postal stationery with overprint "Pleskau / 20 kop", with advertising slogan 06, black hand stamp overprint, with additional franking Pleskau Michel number 5, blanco card, cancelled by cancel "PCKOB * K * 19 9 41, photo expertize Robert Brunel VP (2025), "the condition is perfect, expertized Zirath BPP