Girard Perregaux

I have landed recently the fairly rare GP Type XX and have now taken pics next to my Breguet Type XX. Two in my view beautiful watches, looking largely similar in order to conform to the mil‘specs. Main obvious difference is the case that is thicker with ...  

Thanks for the comparison. M4

Here is another one from a friend. ...  

This of your friend has the GP in capitals, interesting version. Cheers, HSTE

Which one came first? Also, how do you like the Breguet? I really like it and have been thinking about maybe pulling the trigger.

......primarily for military use, Then a few Matthey Tissot branded dials for civilian use. And why the Girards Perregaux is I guess a big mystery. The Breguet is great, a bit thicker than the GP but I just like very much the design, be it the Breguet or ... 

That's a great find.

Cheers, HSTE

Why is it -I have thought of the Type XX being bi-compax design?