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British Royalty, London, England, 12th May 1937, King George VI and Queen Elizabeth pictured wearing their crowns and coronation robes as they stand on the balcony of Buckingham Palace with Princess Elizabeth (waving) and Princess Margaret (Photo by Popperfoto via Getty Images/Getty Images)

British Royalty, London, England, 12th May 1937, King George VI and Queen Elizabeth pictured wearing their crowns and coronation robes as they stand on the balcony of Buckingham Palace with Princess Elizabeth (waving) and Princess Margaret  (Photo by Popperfoto via Getty Images/Getty Images)

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Queen Elizabeth (1900 - 2002) smiling from beneath her parasol while travelling with the president's wife, Eleanor Roosevelt (1884 - 1962), during a procession in Washington DC. (Photo by Hulton Archive/Getty Images)

Queen Elizabeth (1900 - 2002) smiling from beneath her parasol while travelling with the president's wife, Eleanor Roosevelt  (1884 - 1962), during a procession in Washington DC.   (Photo by Hulton Archive/Getty Images)

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19th October 1939: King George VI (1895 - 1952) (centre) and Queen Elizabeth (1900 - 2002) (left) visiting New Zealand house in the Strand, London, discussing a model of one of the forty engines ordered by the New Zealand government from Britain at a cost of £500,000. (Photo by Reg Speller/Fox Photos/Getty Images)

19th October 1939:  King George VI (1895 - 1952) (centre) and Queen Elizabeth (1900 - 2002) (left) visiting New Zealand house in the Strand, London, discussing a model of one of the forty engines ordered by the New Zealand government from Britain at a cost of £500,000.  (Photo by Reg Speller/Fox Photos/Getty Images)

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London, England, 1940, King George VI and Queen Elizabeth (later the Queen Mother) inspecting the bomb damage to Buckingham Palace after a heavy Nazi air raid over the nation's capital during the Battle of Britain in World War Two. (Photo by Popperfoto via Getty Images/Getty Images)

London, England, 1940, King George VI and Queen Elizabeth (later the Queen Mother) inspecting the bomb damage to Buckingham Palace after a heavy Nazi air raid over the nation's capital during the Battle of Britain in World War Two.  (Photo by Popperfoto via Getty Images/Getty Images)

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1940, The Queen Mother as Queen Elizabeth, pictured with her two daughters, Princess Margaret (right) and Princess Elizabeth, later Queen Elizabeth II, holding a dog (Photo by Popperfoto via Getty Images/Getty Images)

1940, The Queen Mother as Queen Elizabeth, pictured with her two daughters, Princess Margaret (right) and Princess Elizabeth, later Queen Elizabeth II, holding a dog  (Photo by Popperfoto via Getty Images/Getty Images)