Revisited: Leonardo da Vinci and the mystery of the world's most expensive painting. Podcast

Salvator Mundi was sold for a record $450m at auction in 2017 to an anonymous bidder. But the painting’s provenance as the work of Leonardo has been called into question. Help support our independent journalism at <a href="https://www.theguardian.com/infocus">theguardian.com/infocus</a>