South Africa
George V gold Proof 1/2 Sovereign 1923-SA PR66 NGC, Pretoria mint, KM20, S-4010. One of only 655 struck. Produced as part of the first Proof issue of British governed South Africa, and doubtlessly one of the finest survivors of this production, ranking at the highest tier of certified quality seen by NGC for the date, with just a couple of light contact marks below the horse's tail limiting the grade from even loftier heights.
From the Caranett Collection
https://coins.ha.com/itm/south-africa/south-africa-george-v-gold-proof-1-2-sovereign-1923-sa-pr66-ngc-/a/3083-30594.s?type=CoinArchives3083
HID02906262019
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Estimate: 1600-2400 USD