INTER-ALLIED COMMISSION - UPPER SILESIAN POLICE - OPPELN GROUP - COMMANDER, blue double-circle official seal Commission Interalliee de Gouvernement et de Plebiscite de Haute Silesie - Police de Haute Silesie - Groupe d'Oppeln (Opole) - Le Commandant (OS handbook no. II.1.c), very neat strike on black-and-white picture postcard, good condition