Russia
USSR Proof 20 Kopecks 1929 PR64 NGC, KM-Y88 (unlisted in Proof). Reeded edge. A gorgeous early Proof and the only example of this date to achieve the designation from either NGC or PCGS. Respectively quite rare, and currently featured as the image coin in NGC's World Price Guide for the type.
https://coins.ha.com/itm/russia/russia-ussr-proof-20-kopecks-1929-pr64-ngc-/a/3082-34751.s?type=CoinArchives3082
HID02906262019
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Estimate: 800-1200 USD