Flag of Cross of Burgundy belonging to the city or City of Mexico, which was also used in other parts of the viceroyalty of New Spain, based on the coat of arms municipality of Mexico and Cross of Burgundy.
Based on the flags displayed in the Museum of the Army (Mexico) and the hall of flags of the National Museum of History.
In addition to the following graphic files.
File:Escudo_del_Ayuntamiento_ciudad_de_Mexico_city_1521.svg

http://es.wikipedia.org/wiki/Archivo:Coronela.png
Own work
Sarumo74