How did a £120 painting become a £320m Leonardo … then vanish?

A film about the disputed Salvator Mundi blames the National Gallery for its role in giving credibility to the claim that it was the artist’s lost workThe National Gallery is facing controversy over its role in the tangled story of how the world’s most expensive painting emerged from obscurity before being sold for a staggering £320m, only to vanish again from the public eye.The gallery exhibited the Salvator Mundi in its Leonardo da Vinci exhibition a decade ago when it was an