See if I can help a little.
The mintages are in the
RedBook price guide. Every collector of U.S
coins should have one. It will also give coin prices, but the prices are
considered high.
Proof coins are always proof coins. They have a different process of
minting. Sometimes a proof coin will end up in circulation. If the amount
of wear drops the grade below PR 60, It will become classified
as a impaired proof.
Uncirculated coins fall into graded MS 60 through MS 70. Below MS 60
coins will be considered circulated. Circulated coins fall into grades
between Poor - PO 1 through Almost Uncirculated - AU 58
----------------
1996 Uncirculated (UNC) Olympic coins are the lowest mintage for modern
commemorative dollars. And have better value.
Many of the UNC 1995 and 1996 dollars have low mintages, so check
the prices of those before listing on
ebay.
There are several others that have good prices, like the 2001 American Buffalo.
Also .. MS 70 can have a much better value than a MS 69, check
those too.