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Official photo taken on November 3, 1972 shows Britain's Queen Elizabeth II, wearing the George IV State Diadem, diamond tiara on British and Commonwealth stamps, and Prince Philip, Duke of Edinburgh, on the occasion of their 25th wedding anniversary. AFP PHOTO (Photo by STRINGER / CENTRAL PRESS / AFP) (Photo credit should read STRINGER/AFP/Getty Images)

Official photo taken on November 3, 1972 shows Britain's Queen Elizabeth II, wearing the George IV State Diadem, diamond tiara on British and Commonwealth stamps, and Prince Philip, Duke of Edinburgh, on the occasion of their 25th wedding anniversary.   AFP PHOTO (Photo by STRINGER / CENTRAL PRESS / AFP)        (Photo credit should read STRINGER/AFP/Getty Images)