1847, BOYD'S CITY EXPRESS, 2 C black/green, cut-round, single franking on entire letter from NEW YORK, dated April 20th 1847, to Ehingen in Germany, on the frontside red maritime transit dater OUTREMER / LE HAVRE, 25 MAI, together with taxation markings. Very rare combination of Local Post obviously used to forward transatlantic mail! (Image)