Lot 50071 – Italy – 1922-24 two negative composite glass clichés

Italy – 1922-24 two negative composite glass clichés, one including « B.L.P. » overprint together with « Assoc. Naz. Mutil./Inv. Guerra-Roma » and four bars over « Opera Naz…. » designation, both showing the profile of a stamp with transparent design in the background to retain the overprint and the designation; the second glass support cliché showing 5c « Opera Naz. Protez./Assist. Inv. Guerra » and 10c « Assoc. Naz. Mutil./Inv. Guerra-Roma »; in both clichés the two elements are disposed as tête-bêche vertically; the composite experiment featuring two design was a very rare practice in the work of Sperati. A unique duo with only matrices in the Postal Museum in Paris, and no clichés in private hands.