In 2017, to celebrate the 30th Anniversary of Britannia, the Royal Mint released a very Limited Issue Britannia £25 Twenty Five Pound Platinum Proof Coin struck in solid fine 999.5 Platinum weighing one quarter of an ounce of fine pure Platinum.

The portrait designed by Louis Tamlyn depicts a contemporary reverse design, reflecting a time of political change when the eyes of the world have often been on Britain.
His design also contains the Trident Mint Mark that celebrates this anniversary.
The obverse design features Jody Clark's Fifth Portrait of Her Majesty Queen Elizabeth II.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.

• Limited Mintage of 538 Coins Worldwide
• Finished to Royal Mint's Proof Quality
• Struck in Solid Fine 999.5 Platinum Weighing One Quarter Ounce of Pure Platinum
• Reverse Designed by Louis Tamlyn
• Boxed with Certificate of Authenticity