BEUTHEN, 15 Pfg grey-violet, 20 Pfg blue, 25 Pfg brown, 30 Pfg yellowish orange, 40 Pfg green-olive, 80 Pfg lilac-brown, 1 Mark red-carmine, 2 Mark brown, 3 Mark dark violet, Steelworks and Dove of Peace 1920 on registered express letter (philatelically inspired) to Osijek / Yugoslavia (SHS State), double-circle BEUTHEN 21 2 21 g (OBERSCHL.) (OS handbook No. 015.10), arrival (3.3.1921) on reverse, rare destination, age and use marks typical of period