This 1960 US Mint Proof Set consists of 5 coins, each made of 90% silver. The set includes a 50C denomination silver coin. all of which are uncirculated and in their original envelope and cello flat pack. The coins were struck at the Philadelphia Mint and have been certified by the U.S. Mint. This set is a great addition to any coin collection and a must-have for any serious collector of US coins.