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8th July 1946: George VI with the Royal Family, at the Royal Lodge at Windsor Castle. (Photo by Lisa Sheridan/Studio Lisa/Getty Images)

8th July 1946:  George VI with the Royal Family, at the Royal Lodge at Windsor Castle.  (Photo by Lisa Sheridan/Studio Lisa/Getty Images)

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The royal family arrive at the London Palladium for the Royal Variety Performance, 5th November 1946. Left to right: Princess Margaret (1930 - 2002), Princess Elizabeth (later Queen Elizabeth II), King George VI (1895 - 1952) and Queen Elizabeth (1900 - 2002, later Queen Mother). (Photo by Keystone/Hulton Archive/Getty Images)

The royal family arrive at the London Palladium for the Royal Variety Performance, 5th November 1946. Left to right: Princess Margaret (1930 - 2002), Princess Elizabeth (later Queen Elizabeth II), King George VI (1895 - 1952) and Queen Elizabeth (1900 - 2002, later Queen Mother). (Photo by Keystone/Hulton Archive/Getty Images)

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London, England, 14th October, 1947, King George VI and Queen Elizabeth (Queen Mother) stand for a family group with Princess Elizabeth (later Queen Elizabeth II) Philip Mountbatten, fiance of Princess Elizabeth and Princess Margaret (right) at Buckingham Palace (Photo by Popperfoto via Getty Images/Getty Images)

London, England, 14th October, 1947, King George VI and Queen Elizabeth (Queen Mother) stand for a family group with Princess Elizabeth (later Queen Elizabeth II) Philip Mountbatten, fiance of Princess Elizabeth and Princess Margaret (right) at Buckingham Palace  (Photo by Popperfoto via Getty Images/Getty Images)

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circa 1950: King George VI (1895 - 1952) and his wife Queen Elizabeth (later Queen Elizabeth the Queen Mother) dressed for an official engagement. (Photo by Fox Photos/Getty Images)

circa 1950:  King George VI (1895 - 1952) and his wife Queen Elizabeth (later Queen Elizabeth the Queen Mother) dressed for an official engagement.  (Photo by Fox Photos/Getty Images)

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Princess Elizabeth holding Princess Anne with Queen Mary (left) whilst Queen Elizabeth (1900 - 2002) holds Prince Charles (right). King George VI and Prince Philip, Duke of Edinburgh stand behind them after Princess Anne's christening. (Photo by Topical Press Agency/Getty Images)

Princess Elizabeth holding Princess Anne with Queen Mary (left) whilst Queen Elizabeth (1900 - 2002) holds Prince Charles (right). King George VI and Prince Philip, Duke of Edinburgh stand behind them after Princess Anne's christening.  (Photo by Topical Press Agency/Getty Images)