Discover the latest addition to our Royal Mint Coins Browse and buy online The 50th Anniversary of Mr. Men Little Miss 2021 UK One Ounce Silver Proof Coin. 50p coins for sale at The Royal Mint. Buy direct from The Royal Mint. 50 Years of the 50p 2019 UK 50p Culture Silver Piedfort Proof Coin. There will be 45,000 coloured, 18,000 silver and only 525 gold coins put on sale which will be available to buy from the Royal Mint. There have been other cool.