Stack's Bowers & Ponterio
Collector's Choice February 2022 Auction 22-24 Feb 2022
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MEXICO. Mint Error -- Struck on Copper-Nickel Blank -- Peso, 2018-Mo. ANACS MS-63.
cf.KM-603. This head-scratching error, of a type usually a bimetallic strike, rendered instead on a copper-nickel planchet. It is unclear what the original piece was, as the Mexico City Mint produced no copper-nickel planchets in 2018 of this diameter, though it quite possibly was a 20 Centavos piece from 1974-83 that was planed down and overstruck. The coin offers up flashy luster and is free of toning.
Estimate: $100 - $200
cf.KM-603. This head-scratching error, of a type usually a bimetallic strike, rendered instead on a copper-nickel planchet. It is unclear what the original piece was, as the Mexico City Mint produced no copper-nickel planchets in 2018 of this diameter, though it quite possibly was a 20 Centavos piece from 1974-83 that was planed down and overstruck. The coin offers up flashy luster and is free of toning.
Estimate: $100 - $200