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

Worldwide Air Post Stamps and Postal History - Monaco

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Start price: $100

Buyer's premium:

1910-14, four PPC (Aeroplane in Flight), representing Biplane Voisin, Curtiss (air marking on reverse seems questionable) and two cards from Air Rally Monaco-Milan and Monaco-Paris, mostly VF, Est. $200-$250