This 1997-S U.S. Mint Premier Silver Proof Set is a must-have for any collector. The set includes 90% silver coins in denominations of 50C, 25C, 10C, 5C, and 1C, all in uncirculated condition. The coins were struck at the San Francisco Mint and are of proof strike type with a fineness of 0.9. The set comes with its original box and packaging, making it an excellent addition to any collection. The coins are ungraded, but the U.S. Mint certification ensures their authenticity. This set is perfect for any collector looking for high-quality silver coins from the United States, and it is a great investment opportunity.