1867, 5 c. greenish blue vertical pair, with “interspazio” margin at top, affixed to 1867 folded cover to Barbarano and cancelled by centrally-struck lozenge obliterator, postmarked with Viterbo c.d.s. despatch (8 Oct), fresh and fine, signed Enzo Diena, with his 1986 certificate. (Michel 14)
