Released during the "bigger is better" days ,the 5170 is a watch that was definitely ahead of its time.
Nowadays the watch world would go crazy over a 39 x 11 mm chronograph with a strong reminiscence to the brand's glorious past !!

I always liked this version with the Breguet numerals and the pulsation scale.

Lots have been said about the movement : I still feel that this has a gorgeous architecture...

...and is very well finished when looking close.
As this is definitely a keeper,now on for the next 10 years !!!
Best,
Gerard