This set contains Five Silver Quarters - One Silver Dime - One Silver Half-Dollar - One Nickel - One Cent - One Sacagawea Dollar - and also Four Presidential $1 Proof Coins There are two "Certificates of Authenticity", one for each box The 2007 United States Mint Silver Proof Set includes 14 coins, each bearing the "S" mint mark of the United Stares Mint at San Francisco. In addition to the new Presidential $1 Coins honoring the past Presidents of the United States" George Washington, John Adams, Thomas Jefferson and James Madison, it also contains all five quarters from the 50 State Quarters Program for the year - Montana, Washington, Idaho, Wyoming and Utah - as well as the Lincoln cent, the Jefferson nickel, the Roosevelt dime, the Kennedy half-dollar, and the Golden Dollar featuring Sacagawea. Distinguishing this collection are the dime, half-dollar and five commemorative state quarters, all of which are produced in 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
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