Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 2

Monaco

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Start price: $150

Buyer's premium:

AIR POST STAMPS : 1955, Sea Birds, group of 11 trial color imperforated proofs, including 100fr (3), 200fr (3) and 1000fr (5), in addition issued complete set of four with perforation 11, full OG, NH (all proofs) or LH, VF, Est. $250-$300, Sc. # C41-44