Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Iceland - 1930 (July 26 - August 5), Pioneer Flight postcard from Isafjordur to Berlin via London, franked by four stamps, including three bearing black airplane overprint on 10a red, in addition First Flight postcard Reykjavik - Sandskeid of 1939 (July 30), both with all appropriate markings, VF, Est. $200-$250, Sc. #C1