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.