Of the 2018-S Reverse Proof Kennedy Half Dollars` mintage of 200,000 coins, only about 10% are estimated to have this very limited Light Finish designation. This rare variety is due to a coin die that was not properly polished and as a result, was incorrectly prepared. With such a limited population of these coins in existence, the 2018-S Reverse Proof Light Finish Kennedy Half Dollar is certainly one of the most unique varieties of the entire series. On top of that, this coin is graded a nearly perfect Proof 69 by NGC, making it a practically flawless example. Add this coin to your numismatic collection for only $139.95!