Urcaquary 1792, Russia, Empress Cathrine II. Large Silver Rouble Coin. Mint Year: 1792 Denomination: Rouble Mint Place: St. Petersburg Reference: Davenport 1686, KM-C#67c. Mint Official: Yakob Afonasiev (Я-А, 1785-1793) Weight: 23.16gm Diameter: 39mm Material: Silver Obverse: Crowned and draped bust of Catherine II right. Mint initials (C.П.Б.) below. Legend: Б.М. ЕКАТЕРИНА . II . IМ ...