Group of six airmail covers flown on passenger jets, all with stamped or typed cachets filled out with information on the flights, signed by the respective pilots. Aircraft and dates are: Caravelle French Jet Liner (May 15, 1957); S.E.210 Caravelle (June 5, 1957); Boeing 707 Jetliner (September 20, 1957); Boeing 707 (American Airlines Training, November 10, 1958); Boeing 707 (American Airlines Training, December 8, 1958); Douglas DC-9 (first flight, February 25, 1965). In overall fine condition.
