The 2013 United States Mint Limited Edition Silver Proof Set is a highly sought-after collector’s item featuring coins with a fineness of 0.999 silver. These uncirculated coins are struck with a proof finish at the San Francisco Mint, making them visually appealing and valuable additions to any coin collection. With certification from the U. Mint, this set is a limited edition release that showcases the craftsmanship and quality of American minting. Single Owner / Never Displayed.