1866 - 5s rose (5th issue) and 10s blue, vertical

 1866 - 5s rose (5th issue) and 10s blue, vertical pair and single, on cover from “MANTOVA 19/6' to Milan, routed via Switzerland due to the war. Rare 35 soldi franking paid to destination, of particular importance as posted on the very day of the interruption of postal relations between Austria and Italy. A significant and rare postal history item. Cert. E.Diena (Sassone 43+44 - Euro -)