Norway's National Museum curator Mai Britt Guleng talk about the previously contested painting by Dutch master Vincent van Gogh, a 1889 self-portrait, left, of which the authenticity was confirmed during a press conference in Amsterdam, Netherlands, Monday, Jan. 20, 2020. The painting, which belongs to the National Museum in Norway, was painted at the Saint-Paul de Mausole psychiatric institution in Saint-Remy de Provence, France. (AP Photo/Peter Dejong)