The coin was struck by The Royal Mint of Great Britain in 1977 in honor of the 25th anniversary of of the reign of Queen Elizabeth II and bears a new effigy of the Queen on horseback. The reverse of the coin displays the Ampulla and Annointing Spoon from the Royal Regalia, encircled by a floral border and surmounted by a Royal Crown. The designer of the coin was Arnold Machin, OBA, RA,