Russia
U.S.S.R. Kopeck 1926 MS66 NGC, Leningrad mint, KM-Y91. Obv. National arms within circle. Rev. Date and value within oat sprigs. Reddish-brown patina, with traces of original red color. Slight striking softness in the central areas, with only minor marks. Fairly available in lower grades, but very scarce in Gem condition and this is the only example certified in MS66 by NGC, with none finer.
Estimate: 300-400 USD