MEXICO. Mint Error -- Off-Metal Strike on Iron-Zinc Planchet -- 10 Pesos, 2021-Mo. Mexico City Mint. PCGS MS-67.
cf. KM-616. Though it should be bimetallic, this piece is struck on a solid iron-zinc blank. Quite a dramatic mint error that is being offered here during the same year as its production.
Estimate: $150 - $300