NAPLES: PROVINCE NEPOLETANE: 1861, 2 gr. blue with good to wide margins, tied by boxed marking to folded cover from "NAPOLI 16 FEB. 1861", the 3rd day of use of this stamp, to Potenza with arrival mark; a fine and scarce cover, sign. Emilio Diena with certificate (Sassone-no. 20b)