1863 (May 9) London, England to New York, N.Y., cds on folded letter with "19/Cents" debit handstamp, carried as endorsed by Cunard Line China from Liverpool May 9 to New York arriving May 22, New York "34" depreciated currency rating h.s.; Very Fine, an early depreciated currency cover. Estimate  $300 - 400. Starting May 1, 1863, exchange office postmasters were authorized to collect on unpaid letters from Great Britain and Ireland, France, Prussia, Hamburg, Bremen or Belgium the postage due in coin or depreciated greenback currency, with a premium calculated daily on the latter. This letter was due either 24¢ in coin or 34¢ in greenback notes. $0 (Image)