Russia
Catherine II gold Rouble 1779 AU58 NGC, St. Petersburg mint, KM-C76, Bit-115 (R), Diakov-388. The sole gold rouble type produced during Catherine's reign, and a remarkably appealing example at that, with strikingly few having been certified above the AU level.
https://coins.ha.com/itm/russia/russia-catherine-ii-gold-rouble-1779-au58-ngc-/a/3089-33176.s?type=CoinArchives3089
HID02906262019
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Estimate: 800-1000 USD