Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - RSFSR and Soviet Union - Pioneer Flight - 1951 (October 16), air mail large size registered pre- printed cover (banking correspondences) from Moscow to Stockholm, franked by four stamps, including horizontal pair of Airplane over Moscow 2r brownish red on bluish paper, all appropriate markings, mostly VF and scarce franking, Scott #C89