Luxembourg, 1932 South American Zeppelin Flight. H. Eckner portrait postcard franked with 1931, 75c Airmail tied by Luxembourg cds, in combination with Germany 25pf Hindenberg + 1m Zeppelin tied by 28.4.32 oval railroad postmark, red flight cachet and Friedrichshafen and Recife transit cds's, Very Fine. Scott No. C2  Estimate $250 - 350. $0 (Image)