2005-2006 US Mint Legacy Proof Sets - 25 Coins Total, 2 Complete Sets Over 3oz Of Silver. 2005-2006 Set of US Mint American Legacy Proof Collections - 25 Coins Total, 2 Complete Sets. The 2005 Legacy Set contains a total of 1.54 oz of Silver and 13 coins, including two 90% Silver commemorative dollars, one honoring Chief Justice John Marshall and another celebrating the 230th anniversary of the U.S. Marine Corps, two Westward Journey Nickels (Bison and Ocean), Five State Quarters (California, Kansas, Minnesota, West Virginia, and Oregon), a Sacagawea dollar, Kennedy Half Dollar, Roosevelt Dime and Lincoln Cent. The American Legaacy mint proof set was only produced for 4 years. The 2006 Legacy Set contains a total of 1.54 oz of Silver and 12 coins, including two 90% Silver commemorative dollars: one honoring the tercentenary of Benjamin Franklin's birth and another celebrating the centennial of the San Francisco Mint, one Jefferson nickel, Five State Quarters (Nevada, Nebraska, Colorado, North Dakota, South Dakota), a Sacagawea dollar, Kennedy Half Dollar, Roosevelt Dime and Lincoln Cent. The American Legacy mint proof set was only produced for 4 years.