Russia
Catherine II 1/4 Rouble (Polupoltinnik) 1790 CПБ ЯA AU58 NGC, St. Petersburg mint, KM-C65c, Bitkin-350, Diakov-650. A scarce date for the issue, this coin features mostly argent surfaces, with some minor rainbow brilliance toward sections of the peripheries. Only a hint of wear on the highest of points prevents a mint state grade.
Estimate: 1400-1600 USD