United States. (Transatlantic Mail - Forwarding Agents). 1845. Stamp-less printed 'Shipping and Commercial' folded letter written from New York dated 'May 31st 1845', endorsed 'per steamer "Britannia", routed via Boston with circular 'Forwarded by Harndens Express from Boston' on reverse in red, with London transit 'June 14', manuscript '1/8' (UK debit to Holland), hand-struck Dutch entry cachet 'Engeland over Rotterdam' on reverse in red (Van der Linden 1028) and Schieden receiver '16/6' on reverse and charged '120' in manuscript Dutch cents due rating.
Scarce Harndens forwarding cachet on cover carried by the S.S. "Britannia" a Cunard Line steamer sailing from Boston to Liverpool via Halifax.