1950, 10 penny us 20 penny \"Berlin landscapes\", two designs from Alfred Yellowhammer, black / white photos on perforated paper supports on black specimen cardboard with embossed seal the Federal Printing Office Berlin, the value to 10 Pfg whitens still retroactive painted retouches on, the issue arrived not to the issue, photo expertize H. D. Schlegel BPP (2021) : \"the quality is perfect. \"