Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Netherlands - Pioneer Flight - 1934 (October 20-26), KLM London - Melbourne Air Race, 4 covers posted into the mail at Amsterdam Central Station, Bussum, Gravenhage and Groningen, each one franked by three values, red flight marking, three addressed to Sydney, one to Melbourne, arrival ds on reverse, mostly VF, Est. $200-$250, Scott #195, 200, C1