1928, Ile de France air mail 10 fr. on  90 c. and 10 fr. on 1,50 fr., unused with original gum, very fine, signed A. Diena and Calves with certificates (1975) (Image 1) (Image 2) (Image)

1928, Ile de France 10 fr. on 90 c. red, wide spacing, with additional franking 50 c. red, tied by octagonel "New York au Havre 23.8.28" to cover, signed Calves and v.d. Weid with certificate (1986) (Image 1) (Image 2) (Image 3) (Image)

1928, Ile de France 10 fr. on 1.50 fr. blue with additional franking, tied by octagonel "New York au Havre 23.8.28" to registered cover with six line special flight cachet in black alongside, stamp with tiny traces of creasing at top, otherwise very fine, signed v.d. Weid with certificate (1986) (Image 1) (Image 2) (Image 3) (Image)