Worldwide Air Post Stamps and Postal History, Philatelic Rarities of the World. Part 1
Lot 131:
1911 (February 18), First Aerial Flight U.P. Exhibition Allahabad cover to Bombay, franked by King Edward VII 1a carmine, tied by red confirmation cachet, date stamps of Allahabad and Bombay on reverse, some traces mounting, F/VF, Est. $500-$600, Sc. # 62
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