INTER-ALLIED COMMISSION - RYBNIK-PLESS ZONE MILITARY COMMAND, 15 Pfg grey-violet horizontal pair Steelworks and Dove of Peace, double-circle LOSLAU 20 3 21 * (Kr. RYBNIK) a (OS handbook no. 196.2, plebiscite-day cancellation), violet double-circle official seal COMMISSIONE INTERALLEATA DI GOVERNO ALTA SILESIA - COMMANDO MILITARE ZONA RYBNIK-PLESS (OS handbook no. IAb), good condition