The 2015 United States Mint America the Beautiful Quarters Silver Proof Set contains 5 coins.
Each of the five quarters bears the "S" mint mark of the United States Mint at San Francisco.
The 2015-S set includes (5) Washington quarters honoring:
Homestead National Monument of America in Nebraska
Kisatchie National Forest in Louisiana
Blue Ridge Parkway in North Carolina
Bombay Hook National Wildlife Refuge in Delaware
Saratoga National Historical Park in New York
Following up on the popularity of the 50 State Quarters Program, Congress authorized the production of new circulating commemorative quarters that will honor a site of "natural or historic significance" from each of the 50 states, 5 U.S. territories, and the District of Columbia. Five designs will be released each year, in the order the coins' featured locations were designated national parks or national sites.