This product is a 19.7 gram 925 sterling silver pendant medal from high school Glen Rock, NJ, awarded in 1961 for a science achievement. The medal was manufactured in the United States and has a composition of silver with a fineness of 0.925. It is a unique and collectible piece that would make a great addition to any exonumia collection or as a special keepsake for the recipient of the award. In original case