Germany, Airmail, 1930, 2m So. America Flight Zeppelin. On "Do.X" picture flight postcard, tied by violet "Dornier DOX, Flugschiff, 30 Jan, 31" on board cds's, black and red flight cachets, Very Fine. Michel No. 438. Scott No. C38  Estimate $200 - 300. $0 (Image)