France, 1927 Nonstop Flight Paris to Buenos Aires, cover franked with 1927, 3f Liberty & Peace + 1.50fr Pasteur tied by "Bourget - Aviation, Seine, 10-10, 27" cds, with special "Buenos Aires, Oct 20, 1927" slogan arrival machine cancel alongside; minor cover wrinkling, still Very Fine, rare with only 17 covers carried. AAMC No. 1063. Estimate  $100 - 150. The French aviators Lts. Dieudonne Coste and Joseph LeBrix successfully crossed the South Atlantic in their plane "Nungesser-Coli" in a flight from LeBourget Field, Paris to Rio Janeiro via St. Louis, Senegal; Natal and Polotas. $0 (Image)