The United States Mint is celebrating 50 years of proof coin production at its San Francisco facility with a limited edition Silver Reverse Proof Set. This 10 coin set is expertly crafted. Its unique reverse proof finish is obtained by applying the mirror-like luster of a traditional proof coin to the design elements. Complimenting this effect with a delicately frosted background creates a magnificent contrast. Individually struck and packaged in an attractive box featuring an artistic rendering of the iconic Golden Gate Bridge each set honors a half century of beautiful proof coins from the San Francisco Mint. Order yours today.