[ComputerGuru]

The Louvre’s Mona Lisa is in shitty condition and poorly preserved. The Prado’s Mona Lisa is thought to be the earliest replica of the original, and has been masterfully restored. There’s no question the La Gioconda has eyebrows (that match the above description) there.

While the background of Prado’s copy was blacked out in the 1700s prior to its restoration this past decade, the foreground was largely untouched.

https://en.m.wikipedia.org/wiki/Mona_Lisa_(Prado%27s_version...

[masswerk]

Arguably, the Pardo Mona Lisa was painted in parallel and shouldn't be considered a mere copy. And it's probably the better painting.

[ComputerGuru]

I share that opinion and wholeheartedly agree, but I refrained for fear of controversy derailing the point. If it were "merely" a very early replica that was infinitely better preserved, it would still be of better historical record value.