Katowice 21.10.1920 single circle (OS handbook number 141.5) as well cork cancel (in the OS handbook unlisted, similar number 141 g) on package card with 1 Mark brown vertical pair smelting works and peace pigeon 1920 to Berlin Tempelhof, arrival postmark ZKr BERLIN N -1.4, 21.5-6 N e TEMPELHOF 1, time typical traces of age and usage