Have you ever wondered how art experts know if a 17th-century painting from the Netherlands is by Rembrandt or not? Well, actually, they don’t! There are many million-dollar paintings in distinguished art collections around the world who once thought to be created by Old Masters and their authorship is now being disputed – for example, The Polish Rider by (possibly) Rembrandt owned by The Frick Collection in New York and The Madonna of the Pinks by (possibly) Raphael owned by the National Gallery in London. In this episode, we will look into different authentication methods used by specialists to confirm or dispute the authorship of paintings: