Bidspirit auction | Worldwide Aerophilately - Germany

Worldwide Aerophilately - Germany - 1933, Chicago Graf Zeppelin Flight to Century of Progress International Exhibition, black overprints on 2m and 4m, top right corner sheet margin blocks of four, full OG, NH (LH on margins), VF, C.v. $2,080, Mi #497-98, €2,400++ , Sc. #C44-45