GREAT BRITAIN: (1952-Present Day) Queen Elizabeth II 2017 Platinum Wedding Anniversary 'Strike of the Day' Proof Sovereign. OBVERSE: features Jody Clarks portrait of the Queen facing right . REVERSE: Designed by Benedetto Pistrucci depicts St George slaying the Dragon. Reeded Edge. The Sovereigns limited to just 750 were struck on the day of Queen Elizabeth II and Prince Philips Platinum Wedding 20th November 2017, are each hand signed by head of production 'Gavin Elliot'. The coin is presented in a cream Royal Mint box with full certification (not pictured) number 437.