20 Kopek postal stationery card with overprint "Pleskau / 20 kop", black handstamped overprint, addressed, with additional postage Pleskau Mi number 8, cancelled with stamp "PCKOB * K * -27 9 41", flawless condition, expertized by Hans Zierer, photographic finding by Robert Brunel VP (2025), "The condition is flawless".