Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 20:
1925, Alaska Emergency Arctic Flight, Polar Bear and Iceberg, 10(c) in various color combinations, set of 7 different, 4 duplicates and one imperforated proof in lilac brown and red, printed on yellow paper, all with large part of OG, F/VF and scarce, Est. $250-$300
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