A flag designed by "A. Bryanchaninov" published in 1917. 
Characteristically, with a loyal attitude to national colors, the author writes "New Russia cannot have the same emblem as the old one, irrevocably condemned by the people."

Source - Catalog of the exhibition "Long Live Freedom!", National Library of Russia
Own work ref1 ref2 ref3
Original: A. Bryanchaninov Vector:  Designism