1930 Rio to Friedrichshafen flights, 5,000r, 10,000r and 20,000r set of three on round-flight cacheted cover and card, appropriate cachets and markings, fine-v.f., cat. $475 (Cat No. 4CL1-3) (Image)

Cat. $475, Est.$200

1930 Brazil-Europa Zeppelin stamps, sets of three, plus two overprinted "Graf Zeppelin USA", also two surcharges, used on six covers or cards, appropriate markings and cachets, additional franking, fine-v.f., cat. $1575 (Cat No. 4CL1-5,8-9) (Image)

Cat. $1575, Est.$500

1930 North America Flight, specially prepared Argentine, cacheted cover originating in Buenos Aires, franked in Rio with set of three "Brazil-Europa Graf Zeppelin USA" overprints, carried via Recife to Lakehurst, fine and rare set of overprints on one cover, signed Roger Koerber (Cat No. 4CL8-10) (Image)

Est.$500