Peruvian Sol de Oro from 1980. Specifically, it appears to be a 1 Sol de Oro coi

Here's more information about this coin:
Currency History: The Sol de Oro was the currency of Peru between 1863 and 1985, eventually replaced by the Peruvian Inti and later the current Peruvian Sol.
Issuance: This coin was issued by the Banco Central de Reserva del Perú (Central Reserve Bank of Peru).
Composition: Depending on the specific denomination, Sol de Oro coins from this period could be made of materials like brass or copper-nickel.
Obverse Design: The side shown in the image features the Peruvian Coat of Arms within a circle and the inscription "BANCO CENTRAL DE RESERVA DEL PERU 1980" around it, with the year 1980 clearly visible at the bottom.