Auction 90, Session 2 - Worldwide Rare Stamps and Postal History
Lot 738:
Selection of Air Post Issues: 1921-33, 12 complete sets, starting with Bleriot XI issues, then Semi-Postal Air Post items – Eagle, Aviation Pioneers and two imperforated sets of Biplane with upright and sideways watermark, full OG (three stamps with toned gum), NH, VF, C.v. $925, Est. $300-$350 (website photo), Sc. #C1-8, CB3‑13, a CB18a- 20a
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