2004 has six coins, including proofs.
2005 has ten coins, including proofs and satin finish.
So...
If you collect only business strikes, there are eight coins.
If you collect business strikes and proofs, there are twelve coins.
If you differentiate the satin finish of the 2005 mint sets, there are sixteen coins.
I do not include the 2006 coins in these scenarios, since that design is still in use today.
2005 has ten coins, including proofs and satin finish.
So...
If you collect only business strikes, there are eight coins.
If you collect business strikes and proofs, there are twelve coins.
If you differentiate the satin finish of the 2005 mint sets, there are sixteen coins.
I do not include the 2006 coins in these scenarios, since that design is still in use today.



















