1865 (May 11th) cover from Prato to Zante fr. with 2x20/15c. Italian stamps. Boxed "FRANCOBOLLO/INSUFFICIENTE", fr. on arrival with 5l. green, 20l. blue and 40l. mauve on blue to pay the full Italy-Greece rate. On reverse "PISTOIA", "ANCONA" and "ΚΕΡΚΥΡΑ" transit postmarks while "ΖΑΚΥΝΘΟΣ" arrival cds on stamps. Fine and rare. (Hellas 17a+19b+20Ib).