Russia
Nicholas I silver 5 Kopecks 1848 CПБ-HI MS66 NGC, St Petersburg mint, Bitkin-404, KM-C163. Obv. Crowned double-headed Imperial eagle. Rev. Crowned date and value in wreath. Superbly struck, with a frosty white obverse and a prooflike reverse with mottled gray and blue toning. No flaws worthy of mention are noted on either the obverse, or the reverse. Only a single piece has bee certified finer (MS67) by NGC and PCGS combined.
Estimate: 800-1000 USD