1861 (Mar. 8) New Orleans La., Confederate States to Barcelona, Spain, blue folded cover bearing well centered 30¢ brown, type I (29) horizontal pair, tied by "New Orleans La. 8 Mar" cds, red "New-York Br. Pkt. Mar 19" exchange cds, carried by Cunard Line Niagara from Boston Mar. 20th to Queenstown Apr. 2nd, reverse with London (4.3) transit and Barcelona (4.7) arrival backstamps, black "12. Rs." due rating handstamp; light vertical fold toning, left 5¢ short corner perf, Very Fine and rare double-weight use, ex-White, Knapp. Estimate  $500 - 750. Lousiana was admitted to the Confederacy on February 4, 1861. $0 (Image)