Hello,
I'm trying to find the actual value for two $20 Double Eagle gold coins I own. The 1st is a 1914s $20 Saint Gaudens, and the 2nd is a 1900 $20 Liberty Head gold piece. Both coins have been graded by PCGS, and both received MS-64 grades. I'm trying to find the wholesale value of these coins. In other words, how much could I expect to receive for each coin if I sold them to a coin dealer?. I looked in the blue book for U.S. coins, but they only list these 2 coins in MS-63 grade.

How can I best determine the actual worth of these two coins?. Does anyone know the answer?. Thank you for your time.