Russia
Alexander II gold Prize Medal ND (ca. 1855), prize medal to students of the St. Petersburg Technological Institute, unsigned, Bust of Alexander II right / Circular inscription within wreath, Diakov 646.6, Smirnov 569 b/3, MS63 NGC. Mirror proofllike fields, with a high relief portrait of Alexander. The devices are nicely frosted, and the overall appearance is superb.
Estimate: 20000-25000 USD