Three 2005 Hoover Dam 70th Anniversary Medals (3 x 1 Troy Oz Silver, Gold-Plated*).  *I did not personally test the metal content but have seen these listed elsewhere as .999 fine silver, 14k gold plating.  Diameter 37mm.  Weight 31.1 grams (each).  If you are not satisfied, return within 30 days for full refund.  See photos.