British Royalty, London, England, 3rd February 1971, Princess Alexandra and Earl Mountbatten pictured leaving Heathrow Airport for the U,S,A [Getty Images]

British Royalty, London, England, 3rd February 1971, Princess Alexandra and Earl Mountbatten pictured leaving Heathrow Airport for the U,S,A (Photo by Popperfoto via Getty Images/Getty Images) — see more

British Royalty, London, England, 3rd February 1971, Princess Alexandra and Earl Mountbatten pictured leaving Heathrow Airport for the U,S,A (Photo by Popperfoto via Getty Images/Getty Images)

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