Flag of the Tuvan People's Republic, in use presumably from 1930-06-28 to 1930-10-18
Own work, created according to 

http://www.heraldicum.ru (left)
Vladislav Aleksandroviĉ Sokolov: State Flags and Coats of Arms of Tuva. In: Flag Bulletin. Nr. 100, Mai-August 1983, ISSN 0015-3370, S. 189–197
File:Coat of arms of the Soviet Union.svg
File:Flag of Tannu Tuva (1921-1926).svg
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