Russia
U.S.S.R. Proof 20 Kopecks 1971, KM-Y132, PR66 PCGS. Obv. National Arms. Rev. Date and value within wheat sprigs. Superbly struck, with fully mirrored fields and a few minor spots, but nothing worthy of individual mention. Very rare and unlisted in Proof.
Estimate: 1000-1200 USD