DOCTOR'S STORAGE UNIT FIND #4 - Da VINCI'S VITRUVIAN MAN w/PARTS HIGHLIGHTED - BY WHO?

This is another piece of art found in a doctor's storage unit won at auction - it is Leonardo Da Vinci's Vitruvian Man. But the unusual thing is parts of it is highlighted in silver - who highlighted it?

It also has a mark (lower middle, left side)that looks like Da Vinci's initials - is it a mark from his estate?

Any info would be greatly appreciated.

Thank you!

 

The monogram looks like LB to me. Could have been put their by an owner, the way Lorenzo Medici had his treasures marked.

 

Note that the little B, or LB, already appears in this image from Wiki.

https://en.wikipedia.org/wiki/Vitruvian_Man#/media/File:Da_Vinci_Vitruve_Luc_Viatour.jpg

Whose "estate" are you asking about? Certainly wasn't the doctor's.

 

It's definitely part of the reproduction. I was thinking the question was whether it was from Leonardo's estate & I meant no, but maybe some Italian big shot who came into possession of it. Suspect question is the one you answered.

 

I thought journey was asking about Leonardo's estate too, at first. But thought I would also make sure, in case he was referring to the "doctor."