Bidspirit auction | Worldwide Pioneer Flights - Austria

Worldwide Pioneer Flights - Austria - 1912, Flight Week, aviation postcard franked by 5h yellow green, tied by Vienna ''1.VII.12'' ds, violet double circle marking ''Flugwoche. Flugfeld. Wien. 23. 30. Juni 1912'', several pencil signatures on picture side, mostly VF, Est. $100-$150, Sc. #113