1851, 2 cr. blue on grey, four mostly close but clear margins all around, tied to 1855 letter to Pistoia by black unframed “P.D.” handstamp, postmarked with two strikes of Livorno despatch c.d.s. (25 Aug), reverse with partial c.d.s. arrival backstamp, vertical fold clear of stamp, an difficult single franking, particularly in such quality; signed Alberto Diena.