No, your pretty much correct blurr.
today they mint some coins in the billions.
The fact they are a special issue their not exactly commom knowledge, But that's the Extent.
Unless You find one of the MS-65's (Mint State 65)
there were 100 Brilliant Proofs Minted. in each date.
those average $800.00 a piece.
they need to be at least ALMOST UNCIRCULATED-50 to be worth $15.00