In 2017, to celebrate the Platinum Wedding of Her Majesty Queen Elizabeth II and Prince Philip, the Royal Mint released a Limited Issue Platinum Wedding £25 Twenty Five Pound Platinum Proof Coin struck in solid fine 999.5 Platinum weighing one-quarter of an ounce of pure Platinum.
The reverse designed by John Bergdahl features heraldic lineage of the two families that became entwined when the young couple married while the obverse designed by Etienne Millner features a new combined portrait .