Egypt: 1931, "Egypt trip", postmark Cairo, franked with special stamp 50 Mm, superb postcard (Image 1) (Image)

Andorra French post office: 1933, "1. South America flight", registered cover, superb (Image 1) (Image)

Luxembourg: 1932, "8. South America flight", connecting flight from Stuttgart, registered postcard, superb (Image 1) (Image)

Netherlands: 1933, "Chicago travel", to Rio de Janeiro, commercial letter, vertical folded, superb (Image 1) (Image)

Netherlands: 1936, "3. North America flight", superb cover (Image 1) (Image)

Switzerland: "L. Z. R. 3", America flight, posting as "Lake Constance ship´s mail", superb postcard, R! (Image 1) (Image)

Switzerland: 1929, "America flight", with delay stamp and 4 RM German Reich franking, arrival postmark "NEW YORK 5. August ", superb cover, RR! (Image 1) (Image 2)

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Switzerland: 1929, "world round flight", to Lot-Angeles, scarce superb postcard, only 272 transported (Image 1) (Image)

Switzerland: 1930, "trip to Russia", superb postcard (Image 1) (Image)

Switzerland: 1930, "Baltic Sea trip", droped Tallin, superb postcard (Image 1) (Image)

Switzerland: 1934, "1. South America flight", special delivery registered cover to Rio with good franking, slight transport traces, superb (Image 1) (Image)

Switzerland: 1934, "Switzerland flight", droped Zurich, registered postcard, superb (Image 1) (Image)

Hungaria: 1930, "Constable country trip", franked with block of four Michel number 435, superb postcard (Image 1) (Image)

Hungaria: 1931, "Iceland flight", droped Reykjavik, superb postcard, in addition to it Iceland delivery registered cover with German franking (Image 1) (Image)