1 Peso Struck on 5 Pesos planchet

This is a minting error — a 1 Peso blank that was fed through the 5 Peso collar and dies, or more precisely, a 1 Peso die pair striking a planchet prepared for the 5 Peso denomination. The Casa de Moneda de Chile has historically outsourced portions of its production, and quality control lapses resulting in wrong-planchet errors have been documented across several South American mints during this period. The 1 Peso itself was by 2002 worth so little in practical terms that the coin's face value was essentially ceremonial.