Russia
USSR Proof "October Revolution - 70th Anniversary" Rouble 1987 PR70 Ultra Cameo NGC, KM-Y206.
https://coins.ha.com/itm/russia/russia-ussr-proof-october-revolution-70th-anniversary-rouble-1987-pr70-ultra-cameo-ngc-/a/61298-25309.s?type=DA-DMC-CoinArchives-WorldCoins-61298-11272022
HID02906262019
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