1930 Helsinki flight to Friedrichshafen, cover franked with bottom sheet margin block of four of 10M Zeppelin 1930 overprints, addressed to Sweden, with Friedrichshafen transit and Stockholm arrival, v.f. and scarce franking (Cat No. C1) (Image)

Est.$750

1930 Helsinki flight to Friedrichshafen, cover franked with sheet margin pair of Zeppelin 1930 overprints, used with additional stamps, neat postmarks and arrival on back, v.f. (Cat No. C1) (Image)

Est.$250

1930 Helsinki flight to Bolzano, Italy, cover franked with two examples of 10M Zeppelin 1930 overprints, used with additional 2p, transit markings of Innsbruck, Friedrichshafen, Bologna and arrival pmks of Bolzano, some cover wear, still fine-v.f. (Cat No. C1) (Image)

Est.$250

1930 Helsinki flight to Friedrichshafen, cover franked with horizontal pair of 10M Zeppelin 1930 overprints, addressed to Stockholm, with Friedrichshafen arrival, fine-v.f. (Cat No. C1) (Image)

Est.$250

1932 5th SAF cover from Helsinki to Brazil, v.f., with Stockholm and Berlin transits and Pernambuco arrival pmks (Image)

Est.$250