cover 1863, concession rate cover with original enclosure written from H.M.S. Vulcan at Shanghai, China, addressed to Scotland, routed via Hong Kong, carried at the 1p. 'Seaman's rate', franked with Great Britain 1p Red Brown (20, Gibbons 38), cancelled on arrival in London, Hong Kong transit d.s. and usual counter signature by the Commanding Officer, cover tear at L. affecting the adhesive, accompanied by reproduction photograph of the sender, James Dixon, and originals of his Admiralty Pension statement and certificate of service record, a fine historical grouping