25 Pfg. postal stamp in the vertical gutter pair, 4 pieces in an unit being a correctly franked on pre-franked answer letter from Opole 18. 4. 22 with senders mark "commission INTERALLIÉE DE administrative district ET DE PLÉBISCITE DE HAUTE-SILÉSIE / DÉPARTEMENT L'INTÉRIEUR PASSPORT" from the allied passport office to Neustadt, Upper Silesia, cover with vertical convolution left, scarce combination!