1855 - Italian Kingdom: Mixed franking of Sardinia 20c. light blue and Italian Kingdom 20c. indigo and 20c. light indigo (Cat. Sassone Sardinia 15D, Italy 2+2b) on piece from "Nocera 3 Gen 1863". Exceptional and extremely rare combination of three different types of the Matraire 20c. Extremely fine. Colla certificate.