RYBNIK, 2 1/2 Pfg blackish grey, 3 Pfg red-brown, 5 Pfg dark green, 10 Pfg red-orange, 15 Pfg dark violet, 20 Pfg blue Numeral issue 1920, 10 on 20 Pfg blue overprint type III a provisional issue 1920 on registered cover to Obersdorf near Jägerndorf / Czechoslovakia, double-circle RYBNIK 20 3 20 * * a (OS handbook No. 293.3), cover passed German currency control in Breslau: provisional typewritten sealing strip / inspection label (not recorded in OS handbook), age and usage wear typical of the period.