Worldwide 1925-33 Better Airmail Covers. Lot of 5 better covers including St. Kitts 1929 first flight, Cuba 5c Airmail Tied with United States C11 on 1930 cover, 1925 Bermuda Air Mail flight cover, 1932 Brazil plate proof on card carried by Zeppelin & sighed by Dr. Hugo Eckner, Knut Ecker, Ernst Lehman, etc., last is 50¢ Baby Zepp. on flight cover, F.-V.F. Estimate  $400 - 600. $0