Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1

Worldwide Air Post Stamps and Postal History - Ecuador

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Start price: $100

Buyer's premium:

1929 (July 14), First Flight cover from Guayaquil – Valparaiso, franked by red Postal overprint on 2c green in vertical strip of three and uprated by semi-official Airplane overprint on 1c green (Sanabria #529), appropriate flight markings and arrival ds, F/VF, Est. $150-$200, Sc. # 302