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 pfennigs plus 20 pfennigs) and pale ultramarine (70 pfennigs plus 35 pfennigs), on postage exceeding tariff rate airmail postcard to the United States, photo expertize Hans Dieter Schlegel BPP "the quality is perfect. " rare!