Russia
Alexander I 20 Kopecks 1820/19 CПБ-ПД MS62 PCGS, St. Petersburg mint, Bitkin-201, KM-C128, this is the overdate issue 1820/19, but PCGS has failed to note this on the holder. Well struck, with slate-gray toning and only minor imperfections. Very scarce in Mint State. When you consider that this piece should be in an overdate (20/19) holder, only one other piece has been certified in MS62, by NGC, none by PCGS, with none finer.
Estimate: 600-800 USD