Dual duty Half Dollar Coin Bottle Opener and Keychain is perfect for your pocket or purse. The 3.63 by 1.5 inch hi-polished silvertone finish keychain bottle opener holds a genuine United States Half Dollar. The 1964 "First Year of Issue" JFK Half Dollar was the only JFK Half Dollar minted of .900 Solid Silver! It was intended as a memorial to the assassination of President John F. Kennedy. Comes in a white jewelry box along with a Certificate of Authenticity.Mint marks may vary.