1920, printed form service letter "commission Interalliee de Governement et de Plebiscite de Haute-Silesie / BUREAU DE RÉPARTITION of the CHARBONS. . . " with appropriate violet official stamp and bilingual franchise note from Opole 15. 11. 20 to Königshütte, cover with transport traces, rare official letter the supervision place for carbon from Upper Silesia!