OPPELN, 50 Pfg dark grey vertical pair and three singles, Steelworks and Dove of Peace 1920, as multiple franking on colour-tinted picture postcard to Bucharest / Romania, double-circle OPPELN 11 1 22 * * h (OS handbook No. 237.21), interesting document from the early inflation period, rare franking and destination, age and usage wear typical of the period.