Great Britain
William IV Proof 1/2 Crown 1831 PR61 Cameo PCGS, KM714.1, S-3834. Plain edge. WW in script on truncation. Clad in a gratifying gunmetal tone across watery surfaces, yielding a sharp visual contrast against a heavily frosted bust of William, itself bordered at the peripheries by a ring of slightly deeper tone. Traces of enhancing blue iridescence are noted throughout, particularly to the reverse.
https://coins.ha.com/itm/great-britain/great-britain-william-iv-proof-1-2-crown-1831-pr61-cameo-pcgs-/a/3094-34792.s?type=CoinArchives3094
HID02906262019
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Estimate: 1500-2000 USD