Depicts the seal of the United Mexican States.

The Seal of the United Mexican States is a modified version of the national coat of arms, with the addition of the full official name of the country Estados Unidos Mexicanos, in a semi-circular accommodation in the upper part of the seal. Current and past Mexican peso coinage have had the seal engraved on the obverse of all denominations.

The coat of arms depicts a Mexican golden eagle perched on a prickly pear cactus devouring a rattlesnake. To the people of Tenochtitlan this would have strong religious connotations, but to the Europeans, it would come to symbolize the triumph of good over evil (with the snake sometimes representative of the serpent in the Garden of Eden).

Hermenegildo Galeana (1772-1814) was a farmer from the Costa Grande region, who in 1810 joined the rebel forces of General Morelos with a group of men and provided the first cannon to the insurgent army. His outstanding participation in important battles in the south of New Spain led him to become, along with Mariano Matamoros, one of the two most important military collaborators of Morelos. Galeana also enjoyed great prestige among the coastal population, something that allowed him to incorporate significant contingents to Morelos' insurgent forces.