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 1804 (KM# 109), Charles IV of Spain, Philippine countermark and chop marks; 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.

Since the XVI century, the silver Mexican coin was broadly accepted in the Far East. It was so highly sought after that Chinese metal smiths and craftsmen forged it unreservedly. To avoid counterfeit coins, Chinese users verified the coin’s silver content and, the authentic ones, were resealed with chops in order to distinguish them from counterfeit coins. In the Philippines, to validate coin circulation in the islands, the colonial government stamped a circular countermark in them, which consisted of a crown and the initials F.7.°, in allusion to King Fernando VII.