Letter from Nantes to St. Thomas 14 April 1866 to Carupano, care of St. Thomas agent. Routing instruction Voie d’Angleterre, stamped P.P. and London transit AP16, with receiving mark closed ring ST. THOMAS A MY2 66 on reverse. Charged 4d due, the letter has been forwarded to Carupano, Venezuela. From Southampton RMSPC SEINE arriving 1 May at St. Thomas. A most unusual mixed franking with French and British postage.