Great Britain
William IV gold Proof Sovereign 1831 PR66★ Ultra Cameo NGC, KM717, S-3829B, W&R-261 (R3). Stunning, a premium gem specimen of William's coronation Proof Sovereign unmatched for technical quality with no other examples even graded PR66 let alone with a 'star' in recognition of its eye appeal. William's portrait is picked out with pristine matte frost, its surrounding fields reflective and slightly dimmed through tone, every element fully rendered in line with its select presentation striking. The best of this issue we have handled previously was a PR65 Deep Cameo example in our January 2019 sale which brought $33,600.
https://coins.ha.com/itm/great-britain/great-britain-william-iv-gold-proof-sovereign-1831-pr66and-9733-ultra-cameo-ngc-/a/3083-31088.s?type=CoinArchives3083
HID02906262019
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Estimate: 10000-15000 USD