2024 Britannia UK Silver Proof 2 oz Coin Box & COA Mintage Of 1250! The 2024 edition of Britannia, a mainstay of British coinage for three centuries. Features a modern interpretation of the figure by Marie-Alice Harel. Struck in two ounces of fine silver. Finished to Proof standard, the finest available from The Royal Mint. Complemented by a booklet that details Britannia’s history and the creation of this year’s design. Diameter: 40.00 mm. Reverse Designer: Marie Alice Harel. Obverse Designer: Martin Jennings.