single tied by straightline transit to March 8, 1851 folded letter from New York City to Heppenheim, Germany, April 1 Le Havre transit and April 5 Heppenheim arrival backstamp, very fine, one of just five recorded examples of the Jefferson Market Post Office stamp on blue (all on cover), only two of which are tied, with this additionally being the only example addressed to a foreign country, an extraordinary local post rarity that has not been offered publicly since the Caspary sale (where it was purchased by George B. Sloane)

Provenance: Alfred H. Caspary (H.R. Harmer Sale 1072, 1957)

John R. Boker, Jr. (Private Transaction)