Lot 91017 – 1930 Zeppelin Pan-American Flight. 14 May cover with Zeppelin sets of three and six (defective)

1930 Zeppelin Pan-American Flight. 14 May cover to New York bearing the Zeppelin sets of three and six (« Z » and « Correo Aéreo » surcharges), the latter with the ordinary inks (the 10c 15c and 25c with faults), all tied by La Paz airmail cds’s, with Zeppelin cachet in English and Spanish on front, « Lloyd Aereo Boliviano » marking and Friedrichshafen duplex on reverse.