The 2005 U.S. Mint Marine Corps 230th Anniversary Proof Silver Dollar is a commemorative coin celebrating the anniversary of the Marine Corps. This uncirculated proof coin has a modern silver/clad composition with a fineness of 0.999. It comes in its original box with a Certificate of Authenticity from the U.S. Mint, showcasing its authenticity and value. The coin is struck in a proof finish, making it a collectible piece for those interested in US coins and military history.