French government places export bar on €15m Leonardo da Vinci drawing

The French government has placed a temporary export bar on a rare double-sided drawing attributed to Leonardo da Vinci, with state officials hailing the piece a national treasure. According to our sister paper Le Journal des Arts, a request for an export certificate was made by the Paris-based auction house Tajan, which announced the discovery last month.  The work depicts Saint Sebastian bound to a tree on one side, and optical studies in light and shadow with text by the Old Master on th