Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Netherlands - Pioneer Flight - 1933 (December 22), ''Postjager'' Catapult Flight to Batavia (now Jakarta), group of six covers, including three specially pre-printed ones, originated from Amsterdam Central Station, Kerkrade and Rotterdam, others from Breda, Eindhoven and Gouda, four with Batavia ''22.12.33'' ds on reverse, others with Semarang ''23.12.33'' or Probolinggo ''26.12.33'', practically all are VF, Est. $300-$350, Scott #C10