1788-KM Russia 5 Kopecks, Kolyvan mint (scarce). PCGS MS62 BN.

These coins as a type are super cool because of how massive and heavy they are (almost 2 oz.) This date/mint combo is scarce and the last comp I can find in MS sold for over $1k in 2014. In an extra thick PCGS holder- which is the first time I've seen one from PCGS- as I'm used to seeing NGC's extra thick ones.