10 Kopecks registered postal stationery with overprint "Pleskau / 20 kop", with advertising slogan 02, black hand stamp overprint, cancelled by cancel "PCKOB * K * 23 8 41" to philatelic pins with additional franking Pleskau Michel number 11 x, overfranked, very fine, photo expertize Robert Brunel VP (2025) "the condition is perfect", expertized Dr. Rommerskirchen BPP