2017 50c Royal 70th Wedding Anniversary Uncirculated Coin. On the 20 November 2017 Her Majesty Queen Elizabeth II and His Royal Highness Prince Philip, The Duke of Edinburgh will celebrate their platinum wedding anniversary. The royal couple are represented by their monogram 'EP' while wreaths of myrtle represent their children,grandchildren and great grandchildren. Each wreath is pinned by the heraldic symbol of the Princes in the direct line succession: The Prince of Wales Charles, The Duke of Cambridge Prince William and Prince George of Cambridge. The remaining royal family are represented by myrtle blossoms, an ancient symbol of marriage and love. Sprays of wattle, each with seven blossoms, represent the royal couple's seven decades of marriage. Mintage 30,000.