(Discriminatory Rate) 1847 (Sep. 21) Baltimore Md. to London, England, datelined folded letter with pencil "24" cent prepaid rating and New York red "Paid" arc handstamp, carried as endorsed by Ocean Line Washington from New York Sep. 23rd to Southampton arriving Oct. 9th, red London (10.9) arrival backstamp with manuscript "1/-" shilling transatlantic packet rating, Very Fine and scarce discriminatory rate. Estimate  $500 - 750. The commencement of the American Packet service on June 1, 1847 led to Britain imposing a "Discriminatory Rate" on mails landed at Southampton with all US prepayment ignored and the One Shilling Packet Rate charged to the addressee. This was carried on the second voyage of the Ocean Line "Washington". $0 (Image)