When Vincent van Gogh was low on money he took to painting on both sides of the canvas, but over the years some of his reverse side paintings were covered up and lost. Now, another of his hidden self-portraits has been discovered, this time at the National Galleries of Scotland.
"Moments like this are incredibly rare," Frances Fowle, senior curator of French art, said in a statement. "We have discovered an unknown work by Vincent van Gogh, one of the most important and popular artists in the world."
The self-portrait was revealed during an X-ray of an 1885 painting by van Gogh, Head of a Peasant Woman, as the museum was prepping for an upcoming exhibition on impressionism, which is scheduled to open at the end of the month.
"Hidden from view for over a century, the self-portrait is on the back of the canvas with Head of a Peasant Woman and is covered by layers of glue and cardboard," the museum said in a statement on Thursday.
Experts at the museum believe the materials covering the newly discovered self-portrait were applied in the early 20th century before the art went on display.