The Prado presented the completed restoration of a work on Tuesday that it has concluded was a replica painted by one of Leonardo da Vinci's apprentices alongside the Renaissance master in his workshop.
"This is the oldest and most important copy of the famous painting known to date," Gabriele Finaldi, the Prado's director of research and conservation said.
For years the copy, which shows a younger and brighter version of the face that has captivated crowds for centuries, was believed to be one of dozens of replicas made long after Leonardo's death.
The painting has belonged to the Prado ever since the museum was founded in 1819 with the Spanish royalty's art collection, but with a background covered in black and a frame believed to be of oak, frequent in the work of northern European artists.
http://www.telegraph.co.uk/culture/...ona-Lisa-Prado-museum-version-on-display.html
Very cool. Makes you think about how colourful the original used to be.
Close up: