Here's the last 4 years of auction history for this date in MS65. There are no auction records to support a $10k value. Only once did this date ever go over $10k and that was likely a high-end example that someone thought would upgrade.
It does appear that the average auction price has dropped from the $6k-$7k range down to the $4k-$5k range over the last 5 years. I would speculate that as more pieces were certified at the gem level, the price dropped. The numismatic gold market has been down a bit lately too.
May-2012 $3,881 PCGS Heritage
Apr-2012 $3,738 NGC Heritage
Mar-2012 $4,025 NGC Heritage
Feb-2012 $5,405 PCGS Ira & Larry Goldberg
Feb-2012 $4,313 PCGS Heritage
Jan-2012 $4,888 PCGS Heritage
Dec-2011 $4,888 NGC Heritage
Dec-2011 $4,600 NGC Heritage
Nov-2011 $4,025 NGC Heritage
Sep-2011 $6,900 PCGS Heritage
Aug-2011 $4,754 PCGS
ebay Jul-2011 $5,001 PCGS
ebayMay-2011 $4,715 NGC Ira & Larry Goldberg
Mar-2011 $4,600 NGC Heritage
Jan-2011 $6,900 PCGS Heritage
Jan-2011 $5,399 PCGS
ebayJan-2011 $5,319 PCGS Heritage
Jan-2011 $4,889 NGC Bowers & Merena
Dec-2010 $5,175 NGC Heritage
Jul-2010 $4,890 NGC Heritage
Jun-2010 $6,325 PCGS Heritage
Jun-2010 $5,182 NGC Heritage
Apr-2010 $5,175 NGC Heritage
Jan-2010 $6,038 PCGS Heritage
May-2009 $5,290 PCGS Ira & Larry Goldberg
Feb-2009 $6,325 PCGS Heritage
Oct-2008 $5,463 PCGS Stack's
Jul-2008 $7,188 NGC Heritage