Mexico, 1982 AD., Mexico City mint, 50 Pesos, KM 490.

Mexico, Templo Mayor de Mexico City and Coyolxauhqui theme, Mexico City mint, 1982 AD.,
50 Pesos (35 mm / 19,74 g), copper-nickel, 19,8 g. theor. mint weight, mintage 222,890,000 , axes coin alignment ↑↓ (180°), reeded edge,
Obv.: ESTADOS UNIDOS MEXICANOS , Mexico's national symbol, an eagle with a snake in beak, perched on cactus, facing left, enclosed in a circle formed by the legend and a wreath - El Escudo Nacional con el águila de perfil hacia la izquierda y devorando a la serpiente con el pico; está parada sobre un nopal y abajo las ramas de laurel y encino atadas por un listón. La leyenda "ESTADOS UNIDOS MEXICANOS".
Rev.: templo mayor de mexico / coyolxauhqui // $ / 50 / 1982 / Mo , value and mintmark to right of large Aztec Templo Mayor stone disk depicting the attack on Coatlicue.
KM 490 .

Year / Mint Mark / Mintage / Details
1982 Mo 222,890,000
1983 Mo 45,000,000
1983 Mo 1,051 (proof)
1984 Mo 73,537,000
1984 Mo 4 (proof)

In Aztec mythology, Coyolxauhqui (Classical Nahuatl: Coyolxāuhqui, "Face painted with Bells") was a daughter of Coatlicue and Mixcoatl and is the leader of the Centzon Huitznahuas, the star gods. Coyolxauhqui was a powerful magician and led her siblings in an attack on their mother, Coatlicue, because Coatlicue had become pregnant.
The pregnancy of Coatlicue, the maternal Earth deity, made her other children embarrassed, including her oldest daughter Coyolxauhqui. As she swept the temple, a few hummingbird feathers fell into her chest. Coatlicue’s child, Huitzilopochtli, sprang from her womb in full war armor and killed Coyolxauhqui, along with their 400 brothers and sisters. He cut off her limbs, then tossed her head into the sky where it became the moon, so that his mother would be comforted in seeing her daughter in the sky every night.
A large shield-shaped stone relief reflecting this story was found at the base of the stairs of the Templo Mayor. On this disk, Coyolxauhqui is shown spread out on her side, with her head, arms and legs chopped away from her body. The orbiting full moon in the stone carving reflects her position as the moon goddess. She is distinguished by bells of eagle down in her hair, a bell symbol on her cheek, and an ear tab showing the Mexica year sign. As with images of her mother, she is shown with a skull tied to her belt. Scholars also believe that the decapitation and destruction of Coyolxauhqui is reflected in the pattern of warrior ritual sacrifice. First, captives’ hearts were cut out. Then the bodies were cast from the temple. At the bottom of the stairs, near the Coyolxauhqui stone, the bodies were decapitated and dismembered.