The 2009 United States Mint Proof Set® contains 18 coins, each bearing the “S” mint mark of the United States Mint at San Francisco. Included in this set are four Presidential $1 Coins honoring past Presidents of the United States: William Henry Harrison, John Tyler, James K. Polk and Zachary Taylor; the six quarter-dollar coins honoring the District of Columbia and the five U.S. territories: Puerto Rico, Guam, American Samoa, the U.S. Virgin Islands and the Northern Mariana Islands; the four Lincoln Bicentennial One Cent Coins recognizing the bicentennial of Abraham Lincoln’s birth; a new Native American $1 Coin; and the Jefferson nickel, Roosevelt dime and Kennedy half-dollar.