Russia
Nicholas I gold 5 Roubles 1851 CПБ-AГ MS64 PCGS, St. Petersburg mint, Bitkin-34, KM-C175.3. Obv. Crowned double-headed Imperial eagle. Rev. Date and value in circle. Gleaming orange-golden luster, with superbly struck devices, and surfaces displaying only a few minor marks. An exceptional example of this conditionally rare issue. Only 1 example has been certified in MS64 by PCGS and NGC with none finer. This is the single piece certified by PCGS
Estimate: 4000-5000 USD