20 Mark on 80 Pfg yellowish orange provisional issue 1922 on express insured letter to Ottmachau/Upper Silesia, double-circle OPPELN 15.5.1922 (OS handbook no. 237.24), arrival O ... CHAU Kr. GROTTKAU (15.5.1922) on reverse, Ottmachau postmark unlisted in OS handbook, rare franking, l827709.i0 interesting early inflation-period document, age and use wear typical of period