French army postal service registered letter from Opole to Paris, the letter was first whose French courier service for offical postal service hand over: violet double oval cancel commission INTERALLIEE DE administrative district / ET DE PLEBISCITE DE hewed SILESIE / SERVICE DE / courier / 19. AVR (IL) 1921 (OS handbook number FCd), the forwarding was however rejected (manuscript notation), therefore to the civil post of the plebiscite area further routed: Upper Silesia multiple franking 80 Pfg purple brown postage stamp issue ironworks and dove of peace 1920, ZKr Opole (237.18), fragment of an arrival postmark single circle at back, very unusual, transport traces