Russia
Nicholas II Proof 20 Kopecks 1906 CПБ-ЭБ PR66 Ultra Cameo NGC, St. Petersburg mint, KM-Y22a.1, Bitkin-108. Obv. Crowned double-headed eagle with sword and scepter. Rev. Crowned date and value in wreath. Beautiful cameo contrast, with no toning on this superb pure-white example. The fields are nicely mirrored and no flaws are noted. None have been certified finer than this amazing piece by either NGC or PCGS.
HID02901242017
Estimate: 1500-2000 USD