Important Collectors' Wristwatches, P...

New York, Jun 15, 2005

LOT 258

"Chronomètre à Résonance" F. P. Journe, "Invenit et Fecit", "Chronomètre à Résonance", No. 153/01R. Made in 2001. Very fine and rare, two-time zone, platinum, world's first chronometer wristwatch with resonance controlled twin independent movements, 40- hour power reserve indication and a platinum F. P. Journe buckle. Accompanied by a wooden fitted box and a certificate.

C. Three-body, solid, polished, transparent case back with 6 screws, topand side crowns engine-turned with a knurled pattern, sapphire crystals.D. Twin silver with concentric radial Arabic numerals and minute rings, offsetsubsidiary seconds screwed onto a matte, 18K pink golddial plate, up-and-down indication at 12. Blued steel "Journe"-style hands.M. Cal. F.P. Journe 13''', rhodium-plated, "fausses côtes" decoration, twin independentcomplete trains set on a single plate, 37 jewels, twin straight line leverescapements, twin beryllium four-arm balances with 4 adjustable timing weights,shock-absorbers, self-compensating free-sprung Invar balance-springs. One of theescapements is mounted on a small platform pivoting around the second wheel bymeans of rack and pinion to adjust the distance between the 2 balances in order to findthe most efficient position for resonance synchronization. The crown at 4 synchronizesthe seconds hands. Dial and case signed.Diam. 38 mm. Thickness 9 mm.(detail of the movement)