This 1 oz .999 silver 2011-P U.S. Mint September 11 National Medal is a valuable addition to any collection. Made of modern silver, this commemorative $1 coin features proof strike type and a fineness of 0.999. The medal was minted in Philadelphia and comes with an ungraded grade and U.S. Mint certification. The coin is a beautiful tribute to the historic event and a must-have for any coin enthusiast. The medal is accompanied by its original OGP case and COA.