1850 - 30c reddish-brown, type I, handmade paper,

 1850 - 30c reddish-brown, type I, handmade paper, in mixed franking with Austria 2 kr black, on fragment cancelled 'LONIGO 15/12' (3C). Extremely rare combination. Signed Mondolfo; cert. E.Diena: 'In my opinion the fragment is genuine and the stamps are perfect: I have signed it ‘E.Diena’ given its great rarity (I am not aware of other mixed frankings formed by these two values).' (Sassone 7 + pt. 12 + Unificato 2 - Euro 46,750)