Russia
Elizabeth Poltina (1/2 Rouble) 1760 CПБ-ЯI, St. Petersburg mint, Bitkin-334 (R1), Diakov-538 (R1), Petrov (6 Rub), AU50 NGC. Lustrous, with minor flan flaws. An extremely rare type, and date, with only a few examples known.
Estimate: 6000-7500 USD