Medals honoring El Santo Nino de Atocha, the Holy Child of Atocha.
The devotion to El Santo Nino de Atocha began after a battle in Spain where Christians were held captive and were not allowed visits from adults to bring food and water. The Christians began to pray and in answer to the prayers, a small child appeared and was allowed to bring food and water to the captives.
Nobody knew who the child was. Eventually, they recognized that the child was Jesus. The original statue of the Holy Child of Atocha was imported from Spain and now resides in Mexico in the town of Fresnillo.