Charity cinderella of the year 1927 in MNH block of 94 + imperforate block of 16 with no gum, the impression of the BLUE COLOR IS INVERTED, VF and interesting! (Image)

1936 "Rocket Flight" 3 covers with cinderellas of rocket flights commemorating the New York Intl. Philatelic Exposition, very attractive! (Image)

7 Covers flown by HELICOPTER between 1946 and 1948, interesting! (Image)