Though it was never adopted as an official flag, many historians consider the first Mexican flag to be the Standard of the Virgin of Guadalupe, which was carried by Miguel Hidalgo after the Grito de Dolores on September 16, 1810. read more
Also, these two flags present a different aspect ratio (proportions): the Italian flag aspect ratio is 2:3 (1 to 1.5), more squarish in shape, while the Mexican flag aspect ratio is 4:7 (1 to 1.75), resulting in a longer shape. read more