MEXICO. Mint Error -- Off Metal Strike, Struck on Copper-Nickel Planchet -- Peso, 2018-Mo. Mexico City Mint. PCGS MS-65.
KM-603. This curiosity was produced by the application of the one Peso dies to a cutdown copper-nickel planchet, though how such an occurrence happened at a modern minting facility is an unknowable mystery of the universe.
Estimate: $150 - $300