Russia
USSR gold Proof Chervonetz (10 Roubles) 1980-(L) PR68 Ultra Cameo NGC, Leningrad mint, KM-Y85. This is the variety with mintmaster's initials on the edge, "ЛМД." The details are heavily frosted and they contrast superbly with the perfectly mirrored fields. The strike is full and no significant flaws are noted.
https://coins.ha.com/itm/russia/russia-ussr-gold-proof-chervonetz-10-roubles-1980-l-pr68-ultra-cameo-ngc-/a/3082-34753.s?type=CoinArchives3082
HID02906262019
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Estimate: 1400-1600 USD