20 Kopecks registered postal stationery with overprint "Pleskau / 60 kop", with advertising slogan 05, black hand stamp overprint, with additional franking, Pleskau Michel number 10 y, cancelled "PCKOB * K * 19 2 42" and "PCKOB * a * 19 2 42", very fine, registered mail is overfranked, photo expertize Robert Brunel VP (2025) "the condition is perfect.