Russia
Nicholas II silver Proof 15 Kopecks 1916 СПБ-BC, St. Petersburg mint, Bitkin-143, KM-Y21a.3, PR66 Ultra Cameo NGC. Fully struck, with light golden toning and no mentionable flaws. Relatively available in Mint State, this issue is quite scarce in Proof and very rare in this superb condition. Ex: Sincona Collection, Part 1, October 9-12, 2012, Lot 1710.
Estimate: 3000-3500 USD