20 Pfg blue horizontal pair with overprint shifted right, Plebiscite on 20 March 1921, multiple franking on black-and-white picture postcard from Mylowitz to Berlin, oval railway post KANDRZIN-BAUERWITZ ZUG 942 ... 3.1921, double-circle RATIBOR 20.3.1921 (OS handbook no. A.10.2), rare cancellation, age and use wear typical of period