RUSSIA. Siberia. 10 Kopecks, 1776-KM. Catherine II (The Great). NGC MS-62 Brown.KM-C-6; Bit-1036; Brekke-519. A popular large size copper issue with the historic 1776 date. A well struck issue with slightly musty surfaces, possibly from sitting in an old envelope for many years. Rich pervasive dark chocolate patina with hints of friction on the high point that mark the grade. Overall a neat high grade 18th century copper issue in large format.