Worldwide flight covers, 1922-1960. 35 covers; mostly Zeppelin with some first flights, range of 1930 Graf Zeppelin flights including Argentina, Hungary, Russia, Brazil, Iceland & Germany Zeppelin frankings, including earlier & later Zepp flights with Zepp frankings including Paraguay, Brazil, etc., Columbia Scadta usages, catapult, 1920 Quito-Barra flight (with full set with an inverted overprint), condition mixed, worth inspection. Estimate  $600 - 800. $0