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Queen Elizabeth II (second left) and Prince Philip, Duke of Edinburgh (second right) pictured together on the steps of Broadlands with Louis Mountbatten, 1st Earl Mountbatten of Burma and Edwina Mountbatten, Countess Mountbatten of Burma in Romsey near Southampton, Hampshire on April 6th 1957. (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)

Queen Elizabeth II (second left) and Prince Philip, Duke of Edinburgh (second right) pictured together on the steps of Broadlands with Louis Mountbatten, 1st Earl Mountbatten of Burma and Edwina Mountbatten, Countess Mountbatten of Burma in Romsey near Southampton, Hampshire on April 6th 1957. (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)