America the Beautiful 5 oz. Silver coins
Provisions authorizing the enduringly popular 5 oz. ATB program were put forth in Title II of the America’s Beautiful National Parks Quarter Dollar Coin Act of 2008. The ATB Silver Bullion 5 oz. coins contain five ounces of .999 fine silver. They are the largest silver coins struck by the U.S. Mint. The obverse design uses the circulating Washington Quarter portrait. A design that highlights one historic National Park or site in each U.S. state or territory appears on the reverse. Begun in 2010, the series will conclude in 2021 after the 56th entry in the series.
The Philadelphia branch of the U.S. Mint strikes the series on a German coining press purchased specifically for large format coinage. The press was set for production on March 1, 2010 and produces over one million coins per year. The 5 oz. silver planchets are supplied by Sunshine Minting, Inc. of Coeur d'Alene, Idaho.