This official 2006 U.S. Mint 10-coin Proof Set contains a Sacagawea dollar, Kennedy half dollar, Roosevelt dime, Jefferson nickel and Lincoln cent, along with all five Statehood quarters (Nevada, Nebraska, Colorado, North Dakota, and South Dakota). The half dollar, quarters and dime are all copper nickel clad. All coins bear the San Francisco "S" mint mark, and feature extra sharp images and mirror-like surfaces. Comes with the original U.S. Mint packaging, including a certificate of authenticity.  I personally purchased these directly from the mint in 2006.