The United States Mint issued the 2012 Star Spangled Banner Silver Dollar to commemorate the War of 1812, particularly the Battle of Baltimore that formed the basis for the lyrics of the Star Spangled Banner, the national anthem of the United States.

2012 S Star-Spangled Banner Uncirculated Silver Dollar Coin Specifications:
Designer: Joel Iskowitz (obverse), William C. Burgard II (reverse)
Weight: 26.7300 g
Composition: 90% Silver (0.7736 ounces of silver)
Diameter: 38.1 mm
Minted at: Philadelphia Mint (Bears the P Mint mark)