2022 British Gold Memorial Half Sovereign Charles III Coin Year: 2022 Grade: Brilliant Uncirculated Purity: .9167 Diameter: 19.16 mm Weight: 3.66 grams Country: United Kingdom Manufacturer: Royal Mint A special edition of The Sovereign struck to honour the remarkable reign of Her Late Majesty Queen Elizabeth II, which also features the official coinage portrait of His Majesty The King.