ROSENBERG, 10 Pfg red-orange Steelworks and Dove of Peace 1920 postal stationery postcard, uprated with vertical pair 3 Pfg dark opal-green Steelworks and Dove of Peace 1920, to Zagreb / Yugoslavia (SHS State), double-circle ROSENBERG 27 4 20 * (OBERSCHL) b (OS handbook No. 285.3), rare destination, age and usage wear typical of the period.