Russia
R.S.F.S.R. Proof 20 Kopecks 1922-ПЛ PR66 NGC, Leningrad mint, KM-Y82. Scattered gray toing, with bold strike and surfaces free of all but minute marks. None have been certified finer.
https://coins.ha.com/itm/russia/russia-rsfsr-proof-20-kopecks-1922-and-1055-and-1051-pr66-ngc-/a/3076-32173.s?type=CoinArchives3076
HID02906262019
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Estimate: 2000-2500 USD