cover 1866 envelope (flap missing) to Boston, U.S.A. bearing 4a. green pair and two singles, all crossed by ink stroke and each cancelled "B/172", showing London Paid transit c.d.s. (5.6), "16/CENTS" accountancy h.s. (tying the pair), "BOSTON. AM. PKT/5" d.s. and, on reverse, large part despatch c.d.s. A rare and most attractive franking. Photo

Details
cover 1866 envelope (flap missing) to Boston, U.S.A. bearing 4a. green pair and two singles, all crossed by ink stroke and each cancelled "B/172", showing London Paid transit c.d.s. (5.6), "16/CENTS" accountancy h.s. (tying the pair), "BOSTON. AM. PKT/5" d.s. and, on reverse, large part despatch c.d.s. A rare and most attractive franking. Photo