Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 1

Worldwide Zeppelin Flights - Germany

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Start price: $100

Buyer's premium:

1929 (April 23-24), Mediterranean Sea Flight stationery postcard 8(pf) dark blue green, uprated by 100(pf) brown violet, tied by board ”22.4.1929” cancel, red flight cachet and Seville ”24.ABR.29” machine marking, mostly VF, drop in Seville mentioned in Frost Cat. only, Est. $150-$200, Sc. #328