Great Britain
George III gilt-copper Proof Pattern 1/2 Penny 1788 PR63 NGC, Soho mint, KM-PnA63, Peck-965. A very scarce Pattern with an intriguing gilding process that leaves the surfaces somewhere between a soft gold and bright bronze in hue, some handling wisps on the reverse discernable, but not overtly distracting.
https://coins.ha.com/itm/great-britain/great-britain-george-iii-gilt-copper-proof-pattern-1-2-penny-1788-pr63-ngc-/a/3076-33993.s?type=CoinArchives3076
HID02906262019
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Estimate: 300-500 USD