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Queen Elizabeth II leaves Schloss Augustusburg in Bruhl, Germany, after attending a State Reception, May 1965. She is wearing the Jubilee Necklace and a diamond bow brooch with pearl drop inherited from Queen Mary. (Photo by Fox Photos/Hulton Archive/Getty Images)

Queen Elizabeth II leaves Schloss Augustusburg in Bruhl, Germany, after attending a State Reception, May 1965. She is wearing the Jubilee Necklace and a diamond bow brooch with pearl drop inherited from Queen Mary.  (Photo by Fox Photos/Hulton Archive/Getty Images)