This is Pablo Picasso's painting "The Blue Room." Created in 1901, the piece is one of the his first masterpieces. He painted the image in Paris, during his famous "blue period."
Scientists and experts from the Phillips Collection, National Gallery of Art, Cornell University, and Delaware's Winterthur Museum have been studying the masterpiece since 2008, the Associated Press reported.
Back in 1954, conservators suspected that there might be another painting below the surface of The Blue Room, because the brushstrokes did not match the composition of the woman depicted in Picasso's studio.
In the 1990s, an X-ray finally revealed a "fuzzy image" of something under the main image.
Now, art experts at the Phillips Collection in Washington used improved infrared imagery to reveal a bearded man wearing a jacket and bow tie, resting his face on his hand with three rings.
"It's really one of those moments that really makes what you do special," said conservator Patricia Favero.
Curator Susan Behrends Frank told the Associated Press that when Picasso "had an idea, you know, he just had to get it down and realize it... He could not afford to acquire new canvasses every time he had an idea that he wanted to pursue."
Patricia Favero said that the identity of the man is still unknown, but they are working to find out who he was.
This is not the first time a hidden image has been discovered underneath a Picasso work.
Studies of the painting "La Vie" revealed that the artist reworked the composition, and a man was found under "Woman Ironing" at Manhattan's Guggenheim Museum.