Opole 30.10.1920 ZKr (OS handbook number 237.18) on registered letter with 10 Pfg on 20 Pfg two examples provissional issue 1920, 10 Pfg orange red two examples, 20 Pfg blue, 50 Pfg dark gray smelting works and dove 1920 to Ratibor, arrival postmark (30.10.1920) at back, time typical traces of age and usage