F.P. Journe

• cal. 1499.2 resonance controlled, twin 18k gold independently manual winding movements in tandem, free-sprung Gyromax balances, 36 jewels • silvered dial, eccentric fan form aperture for power reserve at 12, two engine turned dials indicating time with overlapping subsidiary dials for constant seconds • crown at 12 to adjust both time zones, crown at 4 to synchronize the seconds hands, sapphire crystal display case back secured by six screws • case, dial and movement signed • with a platinum FP Journe buckle 

 

In 1780, Antide Janvier, a gifted watchmaker and watchmaker to the King of France, found that by putting two pendulums on the same structure they began to beat together in resonance. This force enveloped the pendulums, protecting them from outside vibrations and enhancing the movement's precision. Two centuries later, and after A.L. Breguet succeed in building a pocket watch with two pendulums, Francois-Paul Journe, another gifted watchmaker, was the first to find the way to put this phenomenon into a wristwatch: the remarkable Chronomètre à Résonance.  
The present model, today discontinued, is from the early production fitted with a gold movement.

For further information please refer to: Anthony G. Randall, F.P. Journe's Chronomètre à Résonance, March 2002, BHI Horological Journal.