The 2025 United States Mint Silver Proof Set contains 10 beautiful proof quality coins, each bearing the “S” mint mark of the United States Mint at San Francisco. It’s the perfect gift for special achievements, promotions, graduations, and more! The 2025 Silver Proof Set features five 99.9% fine silver American Women QuartersT with proof finishes. One Kennedy Half Dollar. The quarters, dime, and half dollar are struck in 99.9 percent silver. The set is accompanied by a certificate of authenticity.