Leonardo da Vinci’s “Salvator Mundi,” which was discovered by American art dealer Alexander Parish at an estate sale in the mid-2000s, was sold to an unidentified collector for between $75 million and $80 million in May 2013.The details of the sale, which was organized by Sotheby’s, remained confidential until this week.

“Salvator Mundi,” a half-length portrait of Christ holding a crystal orb in one hand, was created around 1500. Since 1900, the heavily over-painted canvas was attributed to Boltraffio, an artist who worked in da Vinci’s studio. It wasn’t until Parish acquired the work and it underwent extensive cleaning and research that it was deemed an original da Vinci formerly owned by King Charles I of England. Prior to last year’s sale, Parish and two other art dealers shared ownership of the work.

In 2012, after raising tens of millions of dollars, the Dallas Museum of Art attempted to buy “Salvator Mundi.” Museum officials made a formal offer to Parish and the painting’s other owners but were rebuffed after some discussion.