The Queen's clockmaker, Robert Ball, makes some last minute checks, to a highly complex 1768 astronomical clock made by the clockmaker to George III, Christopher Pinchbeck, and his architect Sir William Chambers, before an exhibition about the monarch (who took a great interest in horology) and Queen Charlotte opens at the Queen's Gallery, Buckingham Palace, London. (Photo by Fiona Hanson - PA Images/PA Images via Getty Images)
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