Russia
Nicholas I Proof 20 Kopecks 1852 CПБ-ПA PR65 NGC, St. Petersburg mint, KM-C165, Bit-341. Obv. Crowned double-headed eagle with orb and scepter. Rev. Crowned date and value in wreath. Sharply defined details, with deeply mirrored fields and mottled gold and russet toning. Very rare in Proof and the only example certified by NGC and PCGS combined.
HID02901242017
Estimate: 2000-2500 USD