1840 (Oct. 30) New York, N.Y. to London, England, folded letter carried privately to Boston where blue "Harndens Boston" oval handstamp applied, carried by Cunard Line Acadia from Boston Nov. 1 to Liverpool arriving Nov. 15, red London "16 NO 1840" backstamp and manuscript "1" shilling due rating for packet service, Very Fine, the Harnden's Boston oval is very rare struck in blue, used during 1840 only. Estimate  $500 - 750. $0 (Image)