The Salvator Mundi is the first Leonardo painting to be discovered for over a century. Following its re-emergence, it played a leading role in the landmark Leonardo exhibition at the National Gallery in London in 2011, after which it was purchased by a Russian oligarch. In 2017 it was auctioned by Christie's in New York, fetching the world record price of $450m, and now forms part of the collection of Louvre Abu Dhabi. The Salvator Mundi may...