Russia
Catherine II Polupoltinnik (1/4 Rouble) 1792 СПБ-ЯA AU50 NGC, St. Petersburg mint, KM-C65a, Bit-354. Light gray patina with noticeable underlying mint luster. There is a flan flaw, hidden by the toning, on Catherine's bust.
https://coins.ha.com/itm/russia/russia-catherine-ii-polupoltinnik-1-4-rouble-1792-and-1057-and-1055-and-1041-and-1071-a-au50-ngc-/a/61271-99223.s?type=DA-DMC-CoinArchives-WorldCoins-61271-05222022
HID02906262019
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Estimate: 250-350 USD