A 'New' Caravaggio

A thick layer of filthy varnish obscured this painting of St Augustine by Caravaggio. Once cleaned, another "lost" masterpiece was revealed. Infrared reflectography, X-rays, a 19th century label and Vincenzo Giustiniani's 1638 inventory all support expert opinion that this is the real deal (title link). The painting is "quiet" for Caravaggio, but the detail is clearly the work of a master. Note the 3D illusion of a book poking out of the canvas.