MEXICO. Mint Error -- Stuck With Two Obverse Dies -- Peso, ND (1996-2021). Mexico City Mint. PCGS MS-66.
KM-Unlisted. From one of the most dramatic and sought after varieties of mint error, this piece is the result of a "mule" pairing of two obverse dies, plucked from circulation before it saw any handling.
Estimate: $150 - $300