UNIQUE double rate MIXED FRANKING HUNGARY – DDSG DDSG 10k green in pair tied by DDSG SISTOV ds in combination with Hungary 1874 5k rose x2 cancelled by Bazias 22.09.78 cds on cover to Vienna, faults not detracting this extremely rare franking, unique as a double rate cover Cert. Ferchenbauer, ill. Tchilinginrian, ex Capellaro (Image)