1856 (May 23) Boston, Mass. to Canton, China, folded letter with red "Boston Paid Am. Pkt. May 23" cds with pencil "43" cent prepayment for single British treaty rate via Marseille, carried by Collins Line Atlantic from New York May 24 to Liverpool arriving Jun. 4, red crayon "22" cent credit to G.B., red London "Paid 5 JU" transit, Hong Kong (7.25) transit backstamp; small flaw, clean and Very Fine. Estimate  $300 - 400. Prepayment written in pencil underneath the red crayon 22¢ credit to G.B. London placed letter in closed mail bag and sent it to France to catch P&O steamer "Valetta" for transit to Alexandria. P&O steamers "Nubia" and "Singapore" carried letter from Suez to Galle, Ceylon and from Galle to Hong Kong. $0 (Image)