'The Ambassadors', 1533. Double portrait by Hans Holbein (1497-1543) of Jean de Dinteville and Georges de Selve. In the foreground is a distorted skull, representing mortality. When seen from the right, the distortion is foreshortened, and the skull thus appears correctly. From the collection of the National Gallery, London. (Photo by Ann Ronan Pictures/Print Collector/Getty Images)
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Hulton Archive Print Collector