This collection includes all 40 Uncirculated Presidential Dollars from the first one released in 2007 until the final 2020 G.H.W Bush Presidential Dollar. The Presidential $1 Coin Program is part of an Act of Congress, enacted December 22, 2005, which directed the United States Mint to produce $1 coins with engravings of relief portraits of U.S. Presidents on the obverse. In 2007, the U.S. Mint introduced the new Presidential Dollar Coin Series, an extensive collection that celebrates each non-living U.S. President on a unique golden Dollar coin. The Presidential $1 Coin Act (Public Law 109-145) sought to revitalize the design of United States coins and return circulating coinage to its position as an object of aesthetic beauty in its own right. Accordingly, the Presidential $1 Coins feature larger, more dramatic artwork, as well as edge-incused inscriptions of the year of minting or issuance, E PLURIBUS UNUM and the mint mark. The program was to issue coins featuring each of four presidents per year on the obverse, issuing one for three months before moving on to the next president in chronological order by term in office. To be eligible, a President must have been deceased for at least two years prior to the time of minting. At the completion of the program, Jimmy Carter, Bill Clinton, George W. Bush, Barack Obama were all still alive and not eligible to appear on a coin.