Thank You For the business, I will message you if/when any changes from the mint occur regarding the release date. Please be assured you will receive this item shortly after the mint releases. Starting with your registration date for this program, you will receive the next set scheduled for release. Each set currently includes the following coins, each bearing the “S” mint mark of the U. Mint at San Francisco. Unlike circulating coins, proof coins display mirror-like backgrounds with frosted, sculpted foregrounds. Proof coins receive the highest quality strikes and can be distinguished by their sharpness of detail and shiny surface. The coins are placed in presentation lenses to showcase and preserve their exceptional finish. The quarters, half dollar, and dime are struck in. 99.9% fine silver.