Russia
Catherine II gold 10 Roubles 1767 СПБ-TI VF (Altered Surfaces), St. Petersburg mint, KM-C79a, Bit-15 (R). Narrow portrait. The whole of the surfaces display what appears to be intentional porosity, with light marks and evidence of mount removal at 12 o'clock on both sides. Not encapsulated due to altered surfaces, and sold with NGC tag. Sold as is, no returns.
https://coins.ha.com/itm/russia/russia-catherine-ii-gold-10-roubles-1767-and-1057-and-1055-and-1041-ti-vf-altered-surfaces-/a/61271-99248.s?type=DA-DMC-CoinArchives-WorldCoins-61271-05222022
HID02906262019
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Estimate: 1000-1500 USD