cover 1863 unstamped envelope (a little worn at edges) ex the "Locke" correspondence from USA to Rome care of Baring Brothers in London, variously rated, showing superb oval-framed "FORWARDED/BY/SAUNDERS & SON./NASSAU" in red and various transit markings including those of Liverpool, London and Marseilles; docketing at top of face panel indicates that this cover contained two letters dated 24 Feb. and 3 Mar. Rare. Photo