50 F red orange block of three, 1.25 M dark green postage stamps issue 1922 in mixed franking with OS 30 Pfg yellow orange postage stamps issue smelting works and peace pigeon 1920 on cover to Berlin, the letter was carried by rail: railway cancel (TPO) ZKr SUMNIA - KATOWICE 21.7.1922 * No. 272 *, mixed frankings plebiscite area Upper Silesia and east Upper Silesia were by itself inadmissible