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 x, 11 Ix and 12 bx, cancelled "PCKOB * K * 15 1 42", very fine, registered mail is overfranked, photo expertize Robert Brunel VP (2025), "the condition is perfect.