For me it is a no brainer to go for this Breguet.
Sure, the GP’s are awesome, hard to ignore.
A power reserve meter, a tourbillon, a second hand on the tourbillon, a platinum case, 39mm case size, Breguet hands (it is a Breguet, coincidence), and even the black strap is ok.
If you have a house and a couple of nice cars, and still some cash after the purchase, than there is no hurdle on the road.
I see ones a Breguet Marine in a shop and i looked also at images on the internet.
It depends on how the images are taken.
Sure, a Marine is a different Breguet than the tourbillon you post, albeit it was a guilloché Bregeut i had ones in my own hands. Impressive and not expensive. A serious professional bike.