The 2018-S First Patent American Innovation Reverse Proof Dollar Coin from the San Francisco Mint. These coins feature the First Patent along with George Washington's signature. A beautiful Statue of Liberty design graces the obverse of the coin. A reverse proof coin featuring an inverted proof finish. The background is frosted, while all design elements are polished to the same mirror like finish. Each of these coins are in GEM Proof condition, and come complete with the certificate of authenticity and outer box. A very low mintage collectible with just 75,000 made.