This 1970-S Small Date US Mint Proof Set is a must-have for any coin collector. The set includes a 40% silver Kennedy Half Dollar that was minted in San Francisco. The coins are in proof grade and have not been circulated or uncirculated. The set comes with U.S. Mint certification and is a great addition to any collection. The composition of the coins is made of silver and they were struck as business strikes. This set is perfect for anyone who is a fan of collecting coins from the United States.