KATTOWITZ, 20 Pfg blue two singles Steelworks and Dove of Peace 1920 on black-and-white picture postcard to Funchal (Madeira Island) / Portugal, double-circle KATTOWITZ 21 2 21 * (OBERSCHL) g (OS handbook No. 141.24), arrival (7.3.1921), unusual rare destination, age and use marks typical of period