Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia And Soviet Union - Catapult Flight - 1933 (October 1-2), registered cover from Leningrad to USA, delivered with Pioneer Flight Leningrad - Berlin on September 24, franked by four Soviet adhesives and upon arrival to Germany uprated by six values, including two-tete-beche pairs, posted to S.S. Bremen and delivered by Catapult Flight to NYC, all appropriate markings and arrival ds, mostly VF, Est. $500-$600