Quoted From US Mint Web Site
"The 2009 United States Mint Proof Set includes 18 coins, each bearing the "S" mint mark of the United States Mint at San Francisco:
• (4) Presidential $1 Coins
• (6) District of Columbia and U.S. Territories quarters
• (4) Lincoln Bicentennial One Cent coins*
• (1)
Jefferson nickel• (1)
Roosevelt dime• (1) Kennedy half-dollar
• (1) Native American $1 Coin
*Lincoln Cents contain an alloy consisting of 95% copper, 3% zinc and 2% tin that matches the alloy used in the original 1907 version.
The United States Mint Silver Proof Set includes 18 coins, each bearing the "S" mint mark of the United States Mint at San Francisco. The coins are as follows:
• (4) Presidential $1 Coins
• (6) District of Columbia and U.S. Territories quarters*
• (4) Lincoln Bicentennial One Cent coins*
• (1)
Jefferson nickel• (1) Roosevelt dime*
• (1) Kennedy half-dollar*
• (1) Native American $1 Coin
*Lincoln Cents contain an alloy consisting of 95% copper, 3% zinc and 2% tin that matches the alloy used in the original 1907 version. The dime, half-dollar and six quarters are struck in 90% silver, generally referred to as "coin silver."
The United States Mint Uncirculated Coin Set includes two (2) envelopes of 18 coins each; one (1) from the United States Mint at Denver and one from the (1) United States Mint at Philadelphia, for a total of 36 coins. Each envelope contains the following coins:
• (4) Presidential $1 Coins
• (6) District of Columbia and U.S. Territories quarters
• (4) Lincoln Bicentennial One Cent coins*
• (1)
Jefferson nickel• (1)
Roosevelt dime• (1) Kennedy half-dollar
• (1) Native American $1 Coin
*Lincoln Cents contain an alloy consisting of 95% copper, 3% zinc and 2% tin that matches the alloy used in the 1907 cent."