RYBNIK, 5 Pfg green dark green Numeral issue 1920, 5 Pfg green and 20 Pfg blue Steelworks and Dove of Peace 1920 on black-and-white picture postcard sent as printed matter to Reykjavik / Iceland, double-circle RYBNIK 30 12 21 * * a (OS handbook No. 293.3), unusual rare destination, age and usage wear typical of the period.