Due to the American Gold Eagle being first produced in 1986, 2006 represents the 20th year anniversary of its production. To celebrate 20 successful years as the official gold coin in the US, the US Mint issued several coins, including a very limited gold set, to commemorate this anniversary. The 2006 American Gold Eagle coins produced offered more than just the standard Brilliant Uncirculated or Proof finishes. Reverse Proof was also introduced, which was a nice surprise for collectors.
