The coin is a genuine 90 % silver: Mercury Dime US Coin. The Necklace is 925 sterling solid Silver 1.2 mm snake 24 inch chain Necklace. It comes with a Royal Blue Velvet Drawstring Jewelry Gift Bag. ***THE MERCURY DIME COIN WILL BE SELECTED AT RANDOM, AND WILL BE OF EQUAL OR BETTER QUALITY OF THE ONE SHOWN*** PLEASE CONTACT US IF YOU NEED A SPECIFIC YEAR.