This 1999 United States Mint Proof Set is a must-have for any coin collector. The set includes proof coins from the United States Mint with a strike type of proof. The coins are certified by the U.S. Mint and come in a beautiful package. The set is perfect for anyone who loves collecting coins or for those who are looking for a unique gift for a loved one. The coins are from the United States and are a great addition to any collection.