... very much appreciated!
I do not own a chrono as I am not a " chrono man" and had to rely on my ADs word regarding how a chrono would behave after 30 min.
You are saying Patek is not a pioneer.
I have quite big difficulties to find another example of a "multi purpose chronograph" ( that is the direct translation from the German definition) as the 5975 is.
Do you know one?
Best
Moritz