Russia
USSR gold Proof Chervonetz (10 Roubles) 1980-MMД PR68 Ultra Cameo NGC, Moscow mint, KM-Y85.
https://coins.ha.com/itm/russia/russia-ussr-gold-proof-chervonetz-10-roubles-1980-mmand-1044-pr68-ultra-cameo-ngc-/a/3076-34575.s?type=CoinArchives3076
HID02906262019
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Estimate: 400-600 USD