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Girard Perregaux

a 2nd hairspring

 

The video made it very clear. If I understand correctly, the 'blade', or more precisely 'wire' running across horizontally  acts as a second hairspring, like the new AP Chronometer, where

 it gives a counter impulse to to that of the balance wheel/hairspring assembly.

Very nice watch!!! And probably works better than a tourbillon as it doesn't matter in what position the 'wire/blade' is in, the torque is the same, I assume.

Thanks for the great post!

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