20 Kopecks registered postal stationery with overprint "Pleskau / 60 kop", with advertising slogan 06, black hand stamp overprint, addressed, with additional franking, Pleskau Michel number 10-11 x and Michel number 12 crossed, the postal stationery is overfranked, cancelled by cancel "PCKOB * K * 22 12 41" and "PCKOB * a * 22 12 41", very fine, expertized Zirath BPP, photo expertize Robert Brunel VP (2025)