Britannia 2018 UK One-Ounce Silver Proof Coin. Mark a milestone or great British moment with a 2018 year-dated Britannia coin. Featuring the elegant new 2018 design which sees Britannia returning to her classical roots. Finished to Proof standard in 999 fine silver. Comes in a Royal Mint case with a booklet that charts Britannia’s journey through history to the present day. Features an original design by acclaimed artist and popular coin designer David Lawrence.