1926 (November 26), Africa Flight registered cover from Zurich to Egypt, franked by four stamps, black boxed confirmation marking, Alexandria "3.Dec.26" arrival ds is alongside, undelivered and returned to Switzerland on December 21, appropriate hs on reverse, mostly VF and scarce, Est. $300-$350

150.00

1929 (December 15), Ad Astra Aero Flight to Khartoum, stationery postcard 20c red, uprated by three stamps, including the Mythen 3fr red, boxed confirmation cachet and arrival ds is alongside, mostly VF

75.00

1930 (December 2), registered cover delivered by Ad Astra Aero Africa Flight on leg Zurich - Cartagena - Alicante, franked by three stamps, blue confirmation cachet, undelivered and returned to Fribourg on December 11, appropriate markings on front and reverse, F/VF

75.00

1931 (October 17-20), 3rd SAF entire stationery wrapper of 2c bister, uprated on reverse with 2 1/2c yellow olive and German Zeppelin stamp of 1m carmine, Friedrichshafen "17.10.31" connection, green Flight cachet on front and confirmation six-line text on reverse along with Pernambuco "20.X.31" receiver, VF and scarce mixed franking item, Sieger #133 var, mixed franking is not mentioned, Est. $200-$250

100.00

1931 (October 17-28), 3rd SA Round Flight stationery unsevered reply card 20(c)/25(c)+20(c)/25(c) uprated for direct flight by two Swiss stamps, bearing Friedrichshafen "17.10.31" connection and green Flight marking, Pernambuco "20.X.31" receiver; reply portion bearing two Brazilian adhesives, violet confirmation and Friedrichshafen "28.10.31" arrival ds, VF and scarce, Sieger #133, Frost #127-141C, C.v. $500

150.00

1932 (July 30-31), Danzig Flight stationery postcard 10(c) red, uprated by two German adhesives, tied by Friedrichshafen "30.JUL.32" connection marking, blue Flight cachet and Ronne "31.7.32" arrival ds,VF,Sieger#169 var (mixed franking is not mentioned in Sieger), Est. $200-$250

100.00

     Flights of 1932
(July 30 - October 27), five postcards representing Danzig Flight and 6th, 7th, 8th and 9th SAF of the year, appropriately franked and cancelled at Romanshorn, bearing Friedrichshafen connections, confirmation markings in various colors and arrival ds, mostly VF, Sieger #169, 177, 183, 189, 195, €625 without a premium for franking, Est. $400-$500

200.00