20 Kopeck postal stationery card with imprint "Pleskau / 20 kop", with advertising slogan 06, black hand-stamped imprint, with additional postage Pleskau Mi number 5, blank card, cancelled with stamp "PCKOB * K * 19 9 41, photographic finding Robert Brunel VP (2025), "The condition is flawless, examined by Zirath BPP.