Russian Coins and Historical Medals. Nicholas I, 1825-1855 Platinum coinage 3 Roubles 1828 СПБ. Platinum. 10.36 gm. Fr 160, Bit 73 (R1), Sev 594 (S), Uzd 0362 (S). Authenticated and graded by PCGC PR 63+ CAMEO. Choice brilliant PROOF
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