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Breguet

classique 5177 or 5197

 

I have been contemplating on obtaining a 3-hander from the classique collection and have been drawn to the 5177(caliber 777Q) and 5197(caliber 591A) in white gold. 

My understanding is that caliber 591A has the balance spring made of silicon as opposed to the regular Breguet overcoil.  Is this an actual advantage?
Caliber 591A has twin barrels.  However, the PR is only 38 hours and seems too little for two barrels(caliber 777Q has 55 hrs PR). 
In terms of both dial size and guilloche pattern, I find the 5197 to be slightly more attractive, but the finishing on the 777Q rotor is more pleasing to look at. 
It's such a dilemma for me, please share any experiences(reliability, performance, etc) that you have with the caliber 777Q and 591A.  Thanks!

*** Mod Note ***
Picture added for illustration





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5 Comments view entire thread 

You can't go wrong with any of them.

 
By: amanico : December 16th, 2013-21:49
You have two very nice expressions of Breguet Classicism, even if I would have preferred WITHOUT date... As for the Calibre, does the silicon spring represent an advantage, compared to a Classic one? I am not sure watchmakers agree on that. Some say yes, ... 

I say both are winners

 
By: Bill : December 17th, 2013-01:08
Technically I can't really say but both have strong appeal. You can't go wrong with either. Please let us know what you finally chose. Bill

Well, they are quite different movements.

 
By: foversta : December 17th, 2013-14:32
The calibers are very different. The 591 is based on the Lemania 8810 which is based itself on the Longines 990. The low power reserve is not a true problem since the double barrel improves the thrust. The 777Q is a more contemporary caliber and I prefer ... 

Great technical question!

 
By: patrick_y : December 18th, 2013-01:26
Welcome to the site! We have some superb qualitative and technical answers by some of the other members of the forum. I too personally like the design of the 5197 more, but I do agree the 5177's caliber is the more desirable caliber. Considering that you ... 

About the power reserve ...

 
By: nilomis : December 18th, 2013-03:02
The "the PR is only 38 hours and seems too little for two barrels" you should consider that on this caliber, that is considered by many as one of the best ten calibers ever made, the two barrels are there not to increase the power reserve but to balance t...