The 2023 Britannia Silver Proof 5 oz UK Coin is a rare and valuable addition to any coin collection, featuring a striking design of the iconic UK Britannia figure. This coin is made of. 999 fine silver and comes in a special OGP box with a Certificate of Authenticity, adding to its appeal and authenticity. Limited to only 420 pieces, this British Royal Mint coin is a prized possession for collectors and investors alike.