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).

Depicts a mask of the god Quetzalcoatl to lower right of value and dollar sign, date below.

Quetzalcoatl forms part of Mesoamerican literature and is a deity whose name comes from the Nahuatl language and means "feathered serpent". The worship of a feathered serpent is first documented in Teotihuacan in the first century BC or first century AD. That period lies within the Late Preclassic to Early Classic period (400 BC – 600 AD) of Mesoamerican chronology, and veneration of the figure appears to have spread throughout Mesoamerica by the Late Classic period (600–900 AD).[4]

Quetzalcoatl, the Aztec god of wind and learning, wears around his neck the "wind breastplate" ehecailacocozcatl, "the spirally voluted wind jewel" made of a conch shell. This talisman was a conch shell cut at the cross-section and was likely worn as a necklace by religious rulers, as they have been discovered in burials in archaeological sites throughout Mesoamerica, and potentially symbolized patterns witnessed in hurricanes, dust devils, seashells, and whirlpools, which were elemental forces that had significance in Aztec mythology. In codex drawings, Quetzalcoatl and Xolotl were both pictured as wearing an ehecailacocozcatl around each of their necks.