In the world of vintage chronographs, we tend to forget that Girard Perregaux made some very nice ones.
Such as this 8846N.

And its Excelsior Park movement:
There are some earlier vintage GP Chronos which are even prettier!
I will try to see if I have enough pictures to make a post on that matter. But if you have something to share, feel free to do it.
Best,
Nicolas