Italy (Sardinia) 1863 5c dark green +10c bistre Folded Cover Torricella to Naples

Folded cover, franked with 5c dark green and 10c bistre (Sassone 13E, 14E), each with four large margins, slightly overlapping, tied by neatly-struck Torricella c.d.s. in greenish-blue (24 Gen), to Naples, with c.d.s. arrival backstamped, a beautiful cover, showing a usage of Sardinian adhesives following the proclamation of the Kingdom of Italy; signed R. Mondolfo & Chiavarello with Enzo Diena certificate, noting "the letter is original and the stamp and its rare cancellation are perfect." (Sassone € 230 + 5'500)