This set includes proof versions of all five quarters issued in 2006 through the 50 State Quarters« Program:
- Nevada "The Silver State"
- Nebraska "Chimney Rock"
- Colorado "Colorful Colorado"
- North Dakota "Badlands with Bison"
- South Dakota "Mount Rushmore and Pheasant"
The sets also include proof versions of:
- 2006 Golden Dollar
- Kennedy half-dollar
- Roosevelt dime
- "Return to Monticello" Jefferson nickel
- Lincoln cent
United States Mint proof coins are extraordinarily brilliant with sharp relief and a mirror-like background. The proofing process results in coins that feature frosted, sculpted foregrounds, giving them a "cameo" appearance. Proof blanks are specially treated, polished and cleaned to ensure high-quality strikes. The blanks are then fed into presses fitted with hand-polished dies and struck at least two times to ensure sharp,high relief. The coins are then packaged in presentation cases to showcase and maintain their exceptional finish.
