ANNABERG, 25 Pfg dark brown, 30 Pfg orange, 40 Pfg green-olive Steelworks and Dove of Peace 1920 on blue ballot envelope with printed official mark of Inter-Allied Commission (OS handbook no. IV.I.a., front) and violet Ratibor district parity committee mark (OS handbook no. A 19, reverse), favour cancellation double-circle ANNABERG 20 3 21 * (Kr. RATIBOR) a (OS handbook no. 006.1), interesting historic document, very neat strikes, good condition