Russia
Nicholas I copper Proof Pattern 1/4 Kopeck 1840 PR66 Brown PCGS, St. Petersburg mint, Bitkin-941 (R2). Obv. Crowned monogram. Rev. Date and value. Richly toned in a deep cordovan color over pristine, reflective fields. Ex: Dr. Robert Hesselgesser Collection.
Estimate: 2500-3000 USD