1860, 1 c. violet brown, horizontal pair, mostly clear to large margins, touched at right, affixed to 1860 folded letter to Livorno, cancelled with Firenze c.d.s., free strike at top, reverse with c.d.s. arrival backstamp (21 Sep), filing folds clear of stamps, else a fine and scarce franking, signed Enzo Diena and Raybaudi, with 1981 Raybaudi certificate. (Michel 17)