This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Mona Lisa restored colour based on Prado Copy painted by apprentice alongside Leonardo. en In the Prado Museum restored copy of the Mona Lisa made by an apprentice It revealed the original colour By morphing the apprentice's portrait and background an accurate colour restoration of da Vinci's is possible Base Layer from CRMF additional