This is a joint 400th Anniversary of the Mayflower Voyage Silver Proof Coin and Medal Set from the United States Mint and the UK Royal Mint. The Medal is Silver Proof, 99.9 Silver 40.60mm diameter with a weight of 31.103g. The Coin is a £2 Silver Proof Coin it is 999 Ag is 38.61mm diameter and has a weight of 31.21g