Bidspirit auction | Worldwide Aerophilately - Germany

Worldwide Aerophilately - Germany - 1933, Chicago Graf Zeppelin Flight to Century of Progress International Exhibition, black overprints on 1m, 2m and 4m, complete set of three, postal cancellations, mostly VF, C.v. $755, Mi #496-98, €1,000 , Sc. #C43-45