When the United States Mint produces a first serious collectors take note. That is because all the first coins have a proven history of rising prices especially when they are made in limited editions like these 2005 quot;Satin Finishquot; State Quarters. This 2005 Satin Finish Collection includes a Philadelphia Mint Set (P Mint) and a Denver Mint Set (D Mint) of all the State Quarters released from 2005 in the brilliant Satin Finish.