Russia
R.S.F.S.R. Proof 20 Kopecks 1922 PR67 Ultra Cameo NGC, Leningrad mint, KM-Y82. Mottled russet toning around the peripheries with no notable flaws. Sharply struck with deeply mirrored fields. By far the finest certified example.
https://coins.ha.com/itm/russia/russia-rsfsr-proof-20-kopecks-1922-pr67-ultra-cameo-ngc-/a/3081-31191.s?type=CoinArchives3081
HID02906262019
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Estimate: 2000-2500 USD