BORSIGWERK, 25 Pfg dark brown, 75 Pfg dark green Steelworks and Dove of Peace 1920, mixed franking with German Empire 75 Pfg blackish blue-green/green-black Germania 1919, 75 Pfg dark carmine so-called Bavarian issue 1920, 75 Pfg blackish rose-lilac two Type II Germania 1920 stamps, on philatelically inspired registered letter to Gelsenkirchen, double-circle BORSIGWERK 30 6 22 * (OBERSCHL) * (OS handbook No. 032.3), arrival (5.7.1922) on reverse, sent after Upper Silesia was reincorporated into German Empire, hence late usage of OS stamps, age and use marks typical of period