RUSSIA. Ruble, 1884-CNB AT. Alexander III. NGC PROOF-64 Cameo.KM-Y-25, Bit-45, Sev-3948, Julian-1177. Mintmasters initials are those of Alexander Hertov, who served at the St. Petersburg Mint from 1846 to 1857. A perfect strike with full details and squared off rims and edge, with light toning golden toning augmenting brilliant silver surfaces on both sides. A strongVERY RARE/strong issue in Proof, the 1884 is represented by just this coin in the NGC Census, while PCGS lists no grading events for this date in the Ruble denomination, and there are no sales of this date in Proof listed in archived auction records. Here is a coin destined for a carefully curated collection of Russian coin rarities.