Star-Spangled Banner Commemorative Coin Act - (Sec. 3) Directs the Secretary of the Treasury to mint and issue $5 gold coins and $1 silver coins in commemoration of the bicentennial of the writing of the Star-Spangled Banner. (Sec. 4) Requires a coin design emblematic of the War of 1812, and in particular of, the Battle for Baltimore that formed the basis for the Star-Spangled Banner. (Sec. 5) Limits the period for coin issuance to calendar year 2012. (Sec. 7) Imposes a surcharge of $35 per coin for the $5 coins and $10 per coin for the $1 coins, which shall be distributed to the Maryland War of 1812 Bicentennial Commission for the purpose of supporting bicentennial activities, educational outreach activities, and preservation and improvement activities pertaining to the sites and structures relating to the War of 1812.