Ref. posting of type 53 pictures.

Here are some of those who have driven it.

There are no doubt others (including Ettore ?).

Robert Benoist.
Jean Bugatti
Louis Chiron
Ben Collings
Sean Danaher
Albert Divo
René Dreyfus
Richard Day
Miguel Gonzales
Lukas Huni
Angela Hücke
Uwe Hücke
Barrie Price
Henry Roseau
Murray Smith
Geoffrey St.John
Achille Varzi

How many of those did really race a T53?

Many say that the T53 was difficult to drive, with it's non-constant velocity joints. however, recent reports say that that was in fact no problem.