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).

Nicolás Bravo Rueda (1786 – 1854) was the 11th Mexican President and a soldier. He distinguished himself in both roles during the 1846–1848 U.S. invasion of Mexico.

During the War of Independence (1810–21), Bravo fought alongside Hermenegildo Galeana and afterward alongside José María Morelos in the campaign of the south. In 1817, the royalists took him prisoner and it was only in 1820 that he was able to recover his freedom. He allied himself with the Plan de Iguala and, on 27 September 1821, he entered Mexico City with the triumphant Ejército Trigarante (in the "Army of the Three Guarantees").