30 Kopecks registered postal stationery cover with overprint "Pleskau / 20 kop", black hand stamp overprint, with advertising slogan 04, with additional franking Pleskau Michel number 10 x and 11 x, cancelled by cancel "PCKOB * K * -8 12 41" and "PCKOB * a * -8 12 41", the registered postal stationery cover is overfranked, very fine, expertized Dr. Rommerskirchen BPP, photo expertize Robert Brunel VP (2025) "the condition is perfect