Proof coins are made differently from normal coins for circulation. Made for collectors, every aspect of the proof coin must approach perfection. High pressure hydraulic presses, multiple strikes and polished dies and blanks make this happen. London Coin offers proof sets as a treasured cornerstone for any numismatic collection. With their unique design and official Certificate of Authenticity, they create beautiful gifts and wonderful keepsakes. The coins are packaged in a protective lens to showcase and maintain their exceptional finish.