1861 - 5c olive green 4th plate, printing of 1861, block of four from “CINGOLI 16 DIC 61” to Roma. Extremely rare block, good margins, piece exhibited in Montecarloas one of the most important worldwide philatelic rarities. Initials Bottacchi, Emilio, Alberto and E.Diena, Cert. Manzoni (Sassone 13C - circa € 400.000+)
