Hidden Van Gogh self-portrait discovered behind another painting

The self-portrait was found on the back of the canvas of the Dutch post-Impressionist's 1885 work 'Head of a Peasant Woman' [Neil Hanna/National Galleries of Scotland]

A painting likely to be a previously unknown self-portrait of Vincent van Gogh has been discovered by the National Galleries of Scotland, according to Edinburgh’s institution.

The portrait was found on the back of the canvas of the Dutch post-Impressionist’s 1885 work “Head of a Peasant Woman”, covered by layers of glue and cardboard.