This 2011 Sept. 11th National Medal is a beautiful commemorative coin made of modern silver/clad. It features a proof strike type and has a fineness of 0.999. The coin is uncirculated and comes with a box and COA. It was minted at West Point and is a great addition to any collection. The coin is ungraded and has a denomination of $1. This United States coin is a must-have for any coin enthusiast.