United States, 1849 stampless cover/folded letter dated March 27, 1849, sent from Philadelphia to Paris, France.  Postal markings:  manuscript routing "per steamer April 4," blue departure postmark "PHILAD  A  PA  5. MAR  27,"  blue boxed "PAID," "ANGL 2 BOULOGNE-S-MER 2. 21 AVRIL 49" handstamp, red boxed "COLONIES ART 13", manuscript "15" marking, and red London transit postmark "B1 / 20AP20, 1849."  
This cover was carried by Cunard Canada.
Please see scans/photos for content, postal markings and exact condition.  Scarce. cover.  Free 1st class insured shipping to any U.S. address.