The 2007 United States Mint Silver Proof Set includes 14 coins, each bearing the "S" mint mark of the United States Mint at San Francisco. It contains the four new Presidential $1 Coins honoring the past Presidents of the United States:
- Washington
- Adams
- Jefferson
- Madison
It also contains all five quarters from the 50 State Quarters Program for the year 2007:
- Montana
- Washington
- Idaho
- Wyoming
- Utah
Last, but not least it contains:
- the Lincoln cent
- the Jefferson nickel
- the Roosevelt dime
- the Kennedy half-dollar
- the Golden Dollar featuring Sacagawea
The dime, half-dollar and five commemorative state quarters, are made of lustrous 90% silver. United States proof coins are extraordinarily brilliant, with sharp relief and a mirror-like background. Their frosted, sculpted foregrounds give them a special cameo effect. 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 twice to ensure sharp relief. The coins are then packaged in presentation cases to showcase and maintain their exceptional finish.
