CORINPHILA AUCTIONS 297 - 308 Day 5

1923/40: Airpost, interesting lot of 26 covers or cards with Zeppelin covers, first flights and also regular mail, e.g. Switzerland SLH RF 28.11.f  CHF 200 and Austrian flight franked with Liechtenstein LBK 30.1.aL = CHF 500; Argentinian and Brazilian Zeppelin stamps on cover, Greece, 3 balloon card, two of which Gordon Bennet 1935 with 'Atterissage Veschenskaïa s/Don', confirmation cancel once in red and once in blue.