Authorized under the Presidential $1 Coin Act of 2005, legislation dictates that four Presidential Dollars will be released each year to honor former Presidents. These coins are highly coveted by numismatists due to the declining rate of mintage, as well as the enlarged, highly detailed portraits of the former Presidents. The high-quality details can be seen not only on the obverse and reverse, but also on the edge-lettering of the coins. Edge-lettering is what permits the designs to be so large, as it leaves more room on both sides of the coin. Whether you are a seasoned numismatist or new to the world of numismatics, these coins are sure to please the eye and bring new life to any collection.