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

Worldwide Air Post Stamps and Postal History - Liberia

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Start price: $100

Buyer's premium:

1941, First Flight Liberia – US, inverted surcharge 50c on 2c red orange and inverted overprint on $1blue, full OG, NH or LH (2c), VF, each one with experts’ signs, C.v. $300 as hinged, Est. $150-$200 , Sc. #C18, C26 var