Worldwide Air Post stamps and postal history, Zeppelin Flight items, philatelic rarities of the World. Part 2
Lot 1024:
1922, black surcharge 20c on Air Squadron 2auk brown and blue, horizontal pair, left stamp without ”CENT” in surcharge, full OG, previously hinged, VF, expertized by H. Bloch, APEX and Friedl Committee certificates, C.v. $200, Est. $120-$150, Sc. #C26, a
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