Russia
Nicholas II silver Proof 15 Kopecks 1913 СПБ-ЭБ, St. Petersburg mint, Bitkin-139 (R1), KM-Y21a.2, PR65 Ultra Cameo NGC. A rare issue in Proof. This Gem example has a hint of golden patina, with superb Cameo contrast, and no meaningful imperfections. Ex: Sincona Collection, Part 1, October 9-12, 2012, Lot 1681.
Estimate: 4000-4500 USD