1978, souvenir sheet issue 10 Ft. Pannonian mosaics with composition error I \" \'PANNONIA1\' in lieu of \'PANNONIAI\' \", unperforated, impeccable mint never hinged, unsigned, rare, issued only 4.300 piece, with the composition error especially attractive, Michel unpriced (additional charge at the perforated variety approximate 30 specialty! )