Opole 23.4.1921 ZKr (237.12) on package card for a cash on delivery package 75 Pfg green horizontal pair, 1 Mark rose lilac at back, 2 Mark dark brown on face postage stamps issue smelting works and peace pigeon 1920 to Berlin Tempelhof, parcel posting slip of the company Krupski & carpenter, arrival postmark single circle BERLIN P. A. 3 29.9.1920 at back, transport traces