Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Russia and Soviet Union - Pioneer Flight - 1930 (February 4-5), Arkhangelsk - Ustsysolsk flight registered cover, franked by complete set of air post surcharges, tied by Arkhangelsk ''27.1.30'' ds, the flight departed on February 4 with length of almost 600mi and it took over 7 hours, all appropriate markings and Ustsysolsk arrival on reverse, mostly VF and rare, only 30 covers carried, Est. $500-$600, Scott #C6-9