Varient flag of the People's Republic of Mongolia at 1924-1930. There seems to be a dispute whether this flag was actually in use. The Mongolian government gives a different sequence of flags for the period in a recent exhibition.
derived and modified from File:Flag of the People's Republic of Mongolia (1924-1930).svg version as of 11:20, 9 February 2016.referenced from File:Flag of the People's Republic of Mongolia (1924-1930).svg version as of 05:34, 6 June 2016 and this link.
The original uploader was NuclearVacuum at  Wikimedia Commons.modified by User:Tcfc2349