Each coin is struck in one ounce of 999 fine silver to the finest Proof standard and only 500 sets have been produced. Both coins have been independently graded by NGC with a grading of Proof (PF) 70, the highest score on the Sheldon coin grading scale, with Royal Mint label. Hand signed by sculptor Martin Jennings, who designed both the first crowned coinage portrait and official coinage portrait of His Majesty The King, which received the monarch's personal approval.
Dated 2022, the obverse of the coin struck in honour of Her Late Majesty Queen Elizabeth II features the official coinage portrait of King Charles III. Dated 2023, the obverse of the coin commemorating the coronation of King Charles III features the first crowned coinage portrait of The King. Presented in a case with a Certificate of Authenticity from The Royal Mint. Her Majesty Queen Elizabeth II 2022 UK 1oz Silver Proof Coin.Obverse Designer Martin Jennings Quality Proof Year 2022. The Coronation of His Majesty King Charles III 2023 UK 1oz Silver Proof Coin. Obverse Designer Martin Jennings Quality Proof Year 2023.