1894, 1 lire ultramarine, an unused corner marginal block of four from the top left corner of the sheet, with Plate Number “2457” at left and large part FRANCOBO(LLI) imprint at top, well centred and of fresh colour, superb unmounted og. Rare: just two blocks of four with Plate Number are recorded. Signed A. Diena. Cert. Raybaudi (2008) (Sassone 31 = € 22.000,- +)
