Russia
R.S.F.S.R. Proof 15 Kopecks 1922 PR66 NGC, KM-Y81. The second year of issue for this only 3-year type, and one sure to serve as the perfect type coin in its next owner's collection.
https://coins.ha.com/itm/russia/russia-rsfsr-proof-15-kopecks-1922-pr66-ngc-/a/3082-34744.s?type=CoinArchives3082
HID02906262019
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Estimate: 1000-1200 USD