A hunt has been launched to discover the identity of the man whose portrait was detected under a 103-year-old painting by Picasso.

Art experts will be combing the archives, analysing correspondence and scrutinising sketches and photographs to try to identify a mystery man whose portrait was discovered hidden under The Blue Room, a 1901 painting by Pablo Picasso.

Infrared scans have revealed the image of a well-dressed gentleman under The Blue Room, painted during the artist’s early days in Paris — during an artistic period known as the 'Blue Period' that lasted from 1901 to 1904.