1865 (Aug. 30) Boston, Mass. to Florence, Italy, cover bearing 1¢ blue (63) and 10¢ green (68) pair, all tied by two strikes of grid cancel (Skinner-Eno LC-P 5) prepaying the 21¢ French treaty rate for ¼-½ oz., red "Boston 'Paid 18' 30 Aug" exchange cds, carried by Cunard Line China from Boston Aug. 30th to Queenstown arriving Aug. 9th, Calais (9.11) transit cds and red framed "P.D." handstamp, Florence (9.15) arrival backstamp; slightly rough opening at top, F.-V.F. Estimate  $200 - 300. $0 (Image)