1857 (Mar. 25) Havre, France to New York, N.Y., blue folded letter bearing France 1854, 80c carmine, four margins, large except close at right, tied by "1495" dotted diamond cancel and red London Paid (3.26), red "Ship-Letter" straightline h.s., carried by Cunard Line Niagara from Liverpool Mar. 28 to Boston arriving Apr. 11, "N. York Br. Pkt. '5' Apr 12" exchange debit cds for British open mail by British packet, Very Fine and interesting use. Scott No. France #19  Estimate $200 - 300. Letter carried on private ship to London, where it was included in the mails on the 13th and last Cunard voyage from G.B. to the U.S. during the three-month period. When Government packets were not available for cross-channel service, the Havre post office could send letters by private ship to England. $0 (Image)