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).

At the center, the image of the obverse of a colonial Mexico coin, 8 Reales 1811 (KM# 190), struck in Zacatecas, Provisional Royalist; at the upper side, parallel to the coin frame, the legend NUMISMATIC HERITAGE OF MEXICO; on the left side, the Mexican mint mark, while on the right field is the $100.

During the Independence War, transporting precious metals from the mines to Mexico’s Mint became difficult. In response, in several mining cities Provisional Houses were established, like in Zacatecas, where a large number of silver coins were produced. In 1811, rustic hill-type coins, where the hills of La Bufa and El Grillo can be seen, were minted, accompanied with the initials L.V.O. (Labor Vincint Omnia; in latin, Work Conquers All), and the inscription MONEDA PROVISIONAL DE ZACATECAS (“PROVISIONAL COIN OF ZACATECAS”).

The royalists were the Latin American and European supporters of the various governing bodies of the Spanish Monarchy, during the Spanish American wars of independence, which lasted from 1808 until the king's death in 1833. In the early years of the conflict, when King Ferdinand VII was captive in France, royalists supported the authority in the Americas of the Supreme Central Junta of Spain and the Indies and the Cádiz Cortes that ruled in the King's name during the Peninsular War. After the restoration of Ferdinand VII in 1814, royalists supported his claim to rule Spanish America, but were split between those that supported his insistence to rule under traditional law and liberals, who sought to reinstate the reforms enacted by the Cádiz Cortes.