Romagna 1859: ½ baj. black on dull yellow, a used example with large even margins all round, tied to page of 1 April 1860 "Supplimento al N. 72 del Giornale L'Adriatico" addressed to Prof. Bartolomeo Soster in Padova, with BOLOGNA cds (April 2, 1860) in black at left. File folds well away from the superb adhesive, a rare single usage. Signed E. Diena, A. Diena Sassone = € 3'250.