20 Kopecks postal stationery postcard with black overprint "Pleskau 60 kop", with Werbespruch03, blanco card, with additional franking Pleskau Michel number 10-11 x and 12 bx, cancelled by cancel "PCKOB * K * -2 1 42", the stamps wise partly spotty perforation on, photo expertize Robert Brunel VP (2025)