Russia
Nicholas I Proof 25 Kopecks 1850 PR64 CПБ-ПA PR64+ Cameo NGC, St. Petersburg mint, KM-C166.1, Bit-301. A stunning example, with light reddish patina, boldly defined devices and deeply mirrored fields. The frosted device give this piece a nice cameo appearance. Very rare in Proof and the finest certified example.
HID02901242017
Estimate: 1500-2000 USD