INTER-ALLIED COMMISSION - COSEL DISTRICT CONTROLLER, 25 Pfg blue Steelworks and Dove of Peace 1920, 20 Pfg dark violet-blue official April 1920, mixed franking on letter from Cosel welfare office to Neisse/Silesia welfare office, double-circle COSEL 24 7 20 * (OBERSCHL) e (OS handbook no. 053.5), violet double-circle official seal COMMISSION INTERALLIEE DE GOUVERNEMENT ET DE LA PLEBISCITE DE HAUTE-SILESIE - CONTROLE DE CERCLE KOSEL (KOZLE) (OS handbook no. III.3.a.). Mixed frankings of definitives and officials prohibited in principle, hence rare unusual cover, age and use wear typical of period