National Galleries of Scotland senior conservator Lesley Stevenson holds Vincent Van Gogh's "Head of a Peasant Woman" and views an X-ray image of the hidden self-portrait. (Photo by Neil Hanna | ...

Experts at the National Galleries of Scotland in Edinburgh discovered a self-portrait of Vincent Van Gogh they had previously been unaware of, on the back of another painting they had been inspecting.

here we have head of *** peasant woman by van Goch, and on the reverse, hidden by *** sheet of cardboard, we have *** previously unknown artist self portrait when we saw the X ray for the first time, ...