Russia
Catherine II gold 10 Roubles 1776/5-CПБ F15 NGC, St. Petersburg mint, KM-C79a. Lightly worn yet nonetheless attractive with areas of deep red tone forming at the peripheries.
https://coins.ha.com/itm/russia/russia-catherine-ii-gold-10-roubles-1776-5-cand-1055-and-1041-f15-ngc-/a/3081-31163.s?type=CoinArchives3081
HID02906262019
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Estimate: 1200-1500 USD