Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World, Part 1
Lot 25:
1938, official postcard of the 1st International Exhibition of Pigeon Racing Federation with the Monument Pigeon- Soldier, numbered on reverse ”1550”; and real photo Aeronautic Propaganda maximum card, showing King Leopold with his aircraft and bearing a stamp of 35+5c green of the similar design, appropriate markings on front and reverse, VF and scarce, Est. $150-$200, Scott #B200, B210
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