Or just use the free PCGS price guide here http://www.pcgs.com/prices/default.aspx
Ignore the prices as they represent the highest price being paid for that coin in a PCGS holder at that grade. Focus on relationships in pricing and you'll clearly see the keys and semi-keys.
Ignore the prices as they represent the highest price being paid for that coin in a PCGS holder at that grade. Focus on relationships in pricing and you'll clearly see the keys and semi-keys.


















