Platinum One Ounce Britannia Bullion Coins. As UK legal currency, these platinum bullion coins from the Royal Mint are capital gains tax exempt for British. The first Britannia platinum coin was produced by the British Mint in The coin is named after the female embodiment of the British nation, Lady Britannia, who. The platinum Britannia is one of two platinum coins issued by the Royal Mint. The other is the Queen's Beasts, a series of ten coins, which is available in gold. When you file a report on the phone or online, make sure to provide contact information such as a telephone number and email address so you can receive a copy of the report. If you would like to upgrade your shipping, you may choose one of the other options for a small fee. These coins are all What should I do? Platinum britannia coins 2: Provide Detailed Platinum britannia coins Whether you file a report in person, over the phone, or online, make sure that you provide as much detail about the incident as possible. What happens if my order is lost in transit? Once you contact us, we can begin the claims process.