Scarce medal issued for the 10th anniversary of the 1930 National Air Races held in Chicago, Illinois, from August 23 to September 1, 1930. Bronze, 63.5 mm, 97 gm, by Oskar J. W. Hansen. Struck by the Medallic Art Co. of New York. The front shows an Art deco-style bust of a pilot in a leather flying helmet with laurel leaf crown and up turned wings in the background, with raised text below: "The Olympiad of the Air"; the reverse depicts two soaring figures and is engraved with the event name, "1930 National Air Races, 10 Anniversary, Chicago." In fine condition.