Opole 23.4.1921 ZKr (237.12) as well cork cancel (237 t) on package card with multiple franking 5 Mark red orange each a copy on face and at back postage stamps issue smelting works and peace pigeon 1920 to Berlin Tempelhof, parcel posting slip of the company S. Pringsheim successor, arrival postmark BERLIN-TEMPELHOF 25.4.1921 at back, transport traces