This flag is fictitious, proposed or locally used unofficially but not adopted. It may be named as it would be as an official flag of a geographical or other entity and have some visual elements that are similar to official logos or flags of that entity, but it is not official and doesn't have any official recognition. Under any circumstances whatsoever, you should not add these flags in any articles, unless it is proposed by a government agency or it is covered by the media or if the flag is locally used.
According to the Mexican copyright law (23-07-2003), Article 14, case 7 & 8: "Copyright shall not apply to shields, flags or emblems of any country, state, municipality or political division; names, acronyms, symbols or emblems of international governmental organisations, or any other organization officially recognized; or legislative, regulatory, administrative or judicial texts, as well as their official translations."
Hence it is assumed that this image has been released into the public domain.
Daytoy a papeles ket naglaon ti naipatinayon a pakaammo, a mabalin a nainayon manipud ti dihital a kamera wenno skanner a naaramat a pangpartuat wenno pang-digitize itoy.
No ti papeles ket saan a nabalbaliwan manipud iti kasisigud a kasasaad, adda dagiti sumagmamano a salaysay a mabalin a saan a napno a maipakita ti nabaliwan a papeles.