U.S. proof sets include a number of proof coins consisting of different denominations. These sets are specially made and produced by United States Mint for presentation and coin collecting purposes. To produce these beautiful coins, special polished dies are used during the minting process to produce coins with a mirror like surface.
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2009 United States Proof Sets
The 2009 United States Proof Sets were released by the United States Mint on June 1, 2009. The sets were originally priced at $29.95 and included a total of eighteen proof coins. This is the largest number of coins included in the standard proof set since they first started being offered by the U.S. Mint. The large number of these proof coins is the result of the inclusion of six different District of Columbia and U.S. Territories Quarters, along with four different 2009 Presidential Dollars, and four different 2009 Lincoln Cents.