WARSCHOWITZ 9.11.1920 single circle (OS handbook number 361.1) as well cork cancel (361 a, as well another cork cancel in the OS handbook unlisted) on package card with 50 Pfg grey, 3 Mark grey violet to Muensterberg / Silesia, arrival postmark ZKr MUENSTERBERG 10.11.20.4-5 N * (SCHLES) b (at back), time typical traces of age and usage