1921 Alabama Commemorative Half Dollar Choice BU+ Blast White Great Eye Appeal. The 1921 Alabama Commemorative Half Dollar is a beautifully uncirculated silver coin with a high degree of eye appeal. Minted in Philadelphia, this commemorative coin features a business strike type and commemorates the state of Alabama. With a fineness of 0.9 silver, this piece is a valuable addition to any coin collection and a true gem for collectors of US coins. The coin in the pictures is the one you will receive.