Cunard Line "Niagara", First Treaty Rate Sailing, Boston - Liverpool 21st February - 6th March 1849. Two folded covers carried by the "Niagara" on the First Treaty Rate Sailing from Boston to Liverpool on Feb. 21st arriving in Liverpool on March 6th, 1849;First is a wrapper with a "Tarboro, N. C., Feb. 13" cds & "via New York per Steamer for Liverpool" addressed to Edinburgh. At New York manuscript charge of "24" cents applied. At Liverpool the "24" was struck out and the normal handstruck 1/- charge applied for collection from addressee. Atlantic transit of 13 days.Second is a stampless folded cover to France with London transit & French maritime markings & manuscript 18 decimes marking, Very Fine. Estimate  $400 - 600. In December 1848 a treaty was negotiated restoring the conditions prior the the Retaliatory Rate period. The treaty was not ratified by Congress until February 1849 and the three sailings by Cunard before ratification is known as the Restored Period. The first sailing under the new treaty was from Boston by the "Niagara" on 21st February 1849. $0 (Image)