KATTOWITZ, postal stationery card 10 Pfg red-orange Steelworks and Dove of Peace 1920 with added 5 Pfg dark opal-green two singles, 20 Pfg blue vertical pair Steelworks and Dove of Peace 1920 to Trondhjem / Norway, double-circle KATTOWITZ 16 3 21 * (OBERSCHL) i (OS handbook No. 141.30), neat strikes, rare cancel, rare unusual destination, age and use marks typical of period