RUSSIA. 1/4 Kopek (Polushka) Novodel, 1765. Ekaterinburg Mint. Catherine II (the Great). PCGS SPECIMEN-64 Brown Gold Shield. KM-N81; Bit-H774 (R2). The finest certified at PCGS with the brown designation, this glistening near-Gem features a rich chocolate brown patina with some original mint red remaining in the protected areas.