1848, CAMBRIA: Folded letter dated "London 15 June 1848" to Washington, with Forwarder cachet "FORWARDED BY MESSrs COUTTS & Co", upon arrival in Boston red "BOSTON SHIP JUN 30" struck and charged with "12" cents, on arrival in Washington on 1st July, the date the new law was effective, the rate was changed to "34" cents - the very first retaliatory rate, fine
