Souvenir sheet issue \"congress of the international philatelist association (FIP) ; international stamp exhibition (IBRA) Munich), variety \"passer shiftings about 7, 5 mm the colours blackish yellow ochre (40+20 Pf. ) and pale ultramarine (70+35 Pf. ), on postage exceeding tariff rate airmail postcard to the United States, photo expertize H. D. Schlegel BPP: \"the quality is perfect. \" rare!