Russia
Nicholas I platinum 6 Roubles 1830 CПБ XF45 NGC, St. Petersburg mint, KM-C178, Bitkin-56 (R2). An exceedingly rare issue produced from platinum first discovered in 1824 in the Ural mountains. From an original mintage of only 8,610 pieces of which most were purportedly melted, rendering this problem-free survivor an attainable yet inviting opportunity.
https://coins.ha.com/itm/russia/russia-nicholas-i-platinum-6-roubles-1830-cand-1055-and-1041-xf45-ngc-/a/3107-31797.s?type=DA-DMC-CoinArchives-WorldCoins-3107-05032023
HID02906262019
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