Russia
Alexander II Proof Rouble 1856 CПБ-ФБ PR63 NGC, St. Petersburg mint, Bitkin-46, Severin-3644, KM-C168.1. Obv. Crowned double-headed Imperial eagle. Rev, crowned date and value in wreath. Sea-green toning, with boldly struck devices and fully mirrored fields. Moderate abrasions are noted on both the obverse and reverse. Rare in Proof.
Estimate: 6000-8000 USD