This medal is a beautiful tribute to the 1961 NY World's Fair and features a stunning depiction of the iconic Unisphere. Made of high-quality 0.999 pure silver, this medal is a must-have for collectors of all levels. The composition consists of silver and the type of medal is a commemorative one. The fineness is 0.999, making it a valuable addition to any collection. Presented my US Steel Corp.It is 45 mm in diameter and weighs 2 1/4 ounces.