The 2007 US Mint 50 State Quarter 90% Silver Proof Set includes a series of uncirculated 25 cent coins struck with a proof finish. The coins are composed of 90% silver and come with a Certificate of Authenticity from the U.S. Mint. This set originates from the United States and specifically includes coins minted in San Francisco. Ideal for collectors, this set represents a piece of American numismatic history with each coin featuring a unique design representing a different state.
