I hate to be a doubter & there is documentation that could be researched for verification but have all the Monaco's linked back to McQueen on the set of LeMans been accounted for prior to this example showing up.
A second thought that popped into my mind was if the McQueen link is genuine then its not a given that this watch was a LeMans movie item. More questions than answers really ...

Did everyone notice the watch has 3 incorrect hands in place ?
Yes thats right, all three chrono hands are the wrong profile ( two black register hands & the red central seconds hand ) , as if a watchmaker without the intimate knowledge of Heuer parts has serviced & replaced with items he had in his own stock.

Strap yourself in folks - this is going to be an interesting ride !!!

- Darren