Ferrari 250 owners... the richest people around, also are the most likely people to also own a Ferrari 250 Testarossa. 14 men are known to own both. Women don't seem to collect cars.

GTO owners who also own Testa Rossas include Rob Walton, Ralph Lauren, Charles Nearburg, Anthony Wang, Giuseppe Lucchini, John McCaw, Giorgio Perfetti, Lawrence Stroll, Tom Price, John Mozart, Peter Sachs, Chip Connor, Lord Anthony Bamford and Carlos Hank Rhon. That's 14 GTO owners who also own a Ferrari Testa Rossa.

There were only 22 serial numbers allocated by Ferrari for the the TR and 20 machines extant.

There are only 33 250s.

So, half the guys who own a 250, also own a 250 TR.

I guess when you're that rich, and I suspect they must all be worth over 500M, you have a lot of time on your retired hands, and might was well spend that time cultivating a car collection you can enjoy at the track.

The 250 that sold for the most seems to be an unauthenticated claim, because so far I've read a half dozen websites and they all say that no one has verified that 57M changed bank accounts for that Ferrari

https://newatlas.com/ferrari-250-gto-monterey-2018-auction/55135/