A finger of suspicion has been pointed at the world’s most expensive painting - because the hands are ‘too childish’ to have been painted by Leonardo da Vinci. Salvator Mundi sold for $450 million (£342 million) in 2017 but art expert Jacques Franck believes it is a ‘workshop Leonardo’ created by two of the artist’s assistants. The French historian argues that the fingers of Christ’s right hand which are held ...