In 1972 to celebrate the Silver Wedding Anniversary of Her Majesty Queen Elizabeth II and Prince Philip, the Royal Mint released a Limited Issue Silver Wedding 25p Twenty Five Pence Commemorative Crown Coin.
The reverse designed by Arnold Machin has the initials EP and the wording Elizabeth and Philip 20 November 1947 - 1972.
The obverse depicts a portrait of Her Majesty Queen Elizabeth II by Arnold Machin.