Russia
Alexander II Proof Poltina (1/2 Rouble) 1857 CПБ-ФБ PR63 Cameo NGC, St. Petersburg mint, KM-C167.1, Bit-51. Obv. Crowned double-headed eagle holding orb and scepter. Rev. Crowned date and value in wreath. Deeply mirrored fields with frosted devices. Sharply defined details, with minor spotting. A very rare Proof issue.
https://coins.ha.com/itm/russia/russia-alexander-ii-proof-poltina-1-2-rouble-1857-cand-1055-and-1041-and-1060-and-1041-pr63-cameo-ngc-/a/3081-31175.s?type=CoinArchives3081
HID02906262019
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Estimate: 3000-4000 USD