BEUTHEN, 5 Pfg green block of six, block of four and two singles, Steelworks and Dove of Peace 1920, mass multiple franking on letter to Mährisch-Ostrau / Czechoslovakia, double-circle BEUTHEN 17 5 20 i (OBERSCHL.) (OS handbook No. 015.13), passed German currency control: double-circle DRESDEN- 19.5.20 ALTST.7 l transit (OS handbook No. III Bb 2) and violet single-circle "65" (unlisted in OS handbook), age and use marks typical of period