cover -- 1853 (8 Sept.) linen-backed XU5 (216x89 mm.), complete with contents, from Sydney "per Berkshire" to New Bedford, bearing 3d. green on grey paper strip of four [31-34] with margins nearly all round clealy cancelled and tied, showing manuscript "6", h.s. "SHIP" and ,on reverse, Sydney Ship Letter c.d.s. A rare and unusual quadruple rate franking. Photo