Bidspirit auction | Worldwide Pioneer Flights - Sweden

Worldwide Pioneer Flights - Sweden - 1929 (9 June), Trans-Atlantic Pioneer Flight Stockholm - New York, interrupted near Iceland due to technical difficulties, illustrated registered cover franked by 45Ö brown with additional King Gustaf V 5kr in block of four, special confirmation cachet in blue, NYC transit on September 11 and Martinez, CA ''Sep.16.1929'' arrival ds, mostly VF and very scarce, only 65 items were carried, Est. $300-$400, Sc. #73