A miniature self-portrait is hidden in a carafe by Caravaggio

The painting Bacchus by Caravaggio features a tiny self-portrait hidden in the hollow of a wine carafe. Spotted as early as 1922 then partially erased by restorations and the darkening of the canvas, this face was authenticated in 2009 thanks to an analysis by infrared reflectography. This discovery fueled debates among specialists, although some art historians like Ebert-Schifferer see it instead as a simple mirage.