Spain
Alfonso XII Proof 50 Centimos 1880(80) M-SM PR66 NGC, Madrid mint, KM-Unl. Gem Proof with fully lustrous and barely marked surfaces, and mottled toning. A handsome example with a legendary pedigree, and rare in this Proof presentation.
Ex. Huntington Collection
https://coins.ha.com/itm/spain/spain-alfonso-xii-proof-50-centimos-1880-80-m-sm-pr66-ngc-/a/3088-35148.s?type=CoinArchives3088
HID02906262019
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Estimate: 1800-2200 USD