1870 (Aug. 23) Louisville, Ky. to Amsterdam, Holland, yellow cover bearing 1869, 10¢ yellow, tied by "Louisville Ky. Aug 23" duplex, red "New York Paid All Br. Transit Aug 25" exchange cds, carried on Cunard Line Samaria from New York Aug. 25 to Queenstown arriving Sep. 5, Amsterdam (9.7) arrival backstamp. Scott No. 116  Estimate $300 - 400. Under the US-Netherlands Convention of 1 Feb. 1870, the prepaid letter rate form the U.S. to the Netherlands was 10¢ per 15 grams (approx. ½ ounce). The entire prepayment was retained by the U.S., so no accounting was required. $0 (Image)