Lot
517 
Sicily, 1859 Ferdinand II 20g slate gray, block of 4 (Pos. 46-7, 56-7), o.g., lightly hinged, four nice margins, fresh, Extremely Fine and scarce; signed A. Diena, with 1970 Bolaffi and 1991 En. Diena certificates. Scott No. 17. Sassone No. 13; €9,000 ($11,070) Estimate $750 - 1,000.
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Realized: $600