RUSSIA. Ruble, 1859. St. Petersburg Mint. Alexander II. PCGS PROOF-64 Cameo Gold Shield. Dav-290; KM-Y-28; Bit-567. Gorgeous quality for this beloved commemorative type, boasting glass-like smoothness in the fields and designs that are fully formed with delicate and consistent frost. Impressive tone adds to the appearance, with significant multicolored iridescence that becomes apparent upon close inspection. <strong>VERY RARE</strong> in this quality, no finer examples with the Cameo designation have been certified by either PCGS or NGC, making this coin an absolute trophy piece for the collector of world-class Russian coins.