(Retaliatory Rates) 1848 (Jun. 24) Liverpool, England to Philadelphia Pa., datelined folded letter with red "Paid at Liverpool, JU 24 1848" framed postmark and matching "1/-" shilling prepaid transatlantic rating, carried as endorsed by Cunard Line Caledonia from Liverpool Jun. 24 to New York arriving Jul. 8, red "New York '29cts.' Jul. 9" due rating cds for 5¢ inland postage plus 24¢ for the American packet rate; Very Fine and choice, Carried on the first Cunard mail voyage to the U.S. states under the retaliatory order. Estimate  $500 - 750. Letter carried on 1st of 25 Cunard mail voyages to the U.S. under the retaliatory order by which the U.S. charged the American Packet rate on letters carried to or from the U.S. by British contract mail steamers. The result was a double charge for sea postage since the British insisted on charging their own sea postage. $0 (Image)