More than 500 years after his death, Leonardo da Vinci continues to captivate, inspiring art lovers to question the secrets behind the Mona Lisa’s smile and ponder the symbolism of Lady With an Ermine as readily as they did centuries ago.

Given the artist’s enduring popularity, the fact that an Italian scholar’s purported discovery of an unknown Leonardo drawing has captured the art world’s attention should come as no surprise. First reported by Italian news outlet Lecco Today, the find—a red chalk sketch of Jesus—could also shed light on the authorship of Salvator Mundi, which (controversially) sold at Christie’s in 2017 as a resurfaced da Vinci.