Bidspirit auction | Worldwide Aerophilately - Germany

Worldwide Aerophilately - Germany - 1931, North Pole Flight of Graf Zeppelin, brown overprints ''Polar-Fahrt 1931'' on 1m, 2m and 4m, complete set of three, all are postally used (1m with left margin on a piece), VF, Mi #456-58, €1,300 , Sc. #C40-42