GPHG 2013: Girard-Perregaux Constant Escapement L.M. (93505-21-631-BA6E) Luxury Watch Review

Contact tmosso@the1916company.com for pricing and availability; Either I have it, or I can get it! Shop this reference: https://www.the1916company.com/pre-owned/girard-perregaux/constant-escapement/constant-escapement-93505-21-631-ba6e/ Shop all Girard-Perregaux watches: https://www.the1916company.com/pre-owned/girard-perregaux/ As the 2018 GPHG watchmaking awards break, we take a look back to the 2013 GPHG Aiguille d'Or: Girard Perregaux's Constant Escapement LM. This watch pioneered the use of elastic silicon as an intermediate constant force device for chronometric precision and isochronism in a traditional mechanical watch. At the heart of the Constant Escapement LM's caliber 9100 is a "silicon butterfly" that is deep reactivate ion etched using technology borrowed from the microchip industry. The 14-micron elastic band at the center of this monobloc component transfers the energy from twin escape wheels to a rocker that impulses a free sprung balance. As a result, the Girard Perregaux Constant Escapement always transmits the same force to its balance regardless of how much energy remains in the twin mainspring barrels. Because the elastic silicon blade "snaps" against the impulsing lever with the same break force regardless of mainspring state, this Girard Perregaux caliber 9100 maintains constant balance amplitude - and precision - for the entirety of its six day power reserve. Sandblasted and PVD darkened bridges and plates ensure an industrial appearance from ar