Developed by Switzerland based Noosphaire SA in 2014, this mechanical watch movement boasts a new GMT watch complication produced under the Pecqueur Conceptuals label.
Almost two centuries ago, watchmaker Onésiphore Pecqueur created a revolutionary Differential that was to lay the foundations of automotive development. The OP 21/1-15 movement thus represents a return to roots by providing an unprecedented interpretation of this mechanism providing a new take on the time-zone theme. As the key component of this patented horological complication, the differential heralds an exceptional approach to watchmaking, propelling mechanics into a whole new dimension.
In keeping with Pecqueur’s original principle, the differential of the OP 21/1-15 caliber involves a layered construction rather than the flat version typical of classic horological differentials. This specific architecture based on a right-angle drive not only creates a light, airy aesthetic with elegant depth effects, but also offers appreciable functional advantages such as reducing friction and lowering energy consumption.
The differential bridge overlapping the local time subdial occupies a generous area, as if to invite the gaze to plunge into the very heart of the barely perceptible revolutions of this ingenious device. Along the same axis, an aperture reveals the disk indicating the GMT zone of the second time zone, of which the hour appears in an offset subdial at 3 o’clock, also bearing a day/night indicator. Meanwhile, the small seconds hand sweeps steadily around its own display at 6 o’clock.
Caliber OP 21/1-15
Mechanical self-winding, Caliber OP 21/1-15 on a VMF 3002 movement, with patented GMT module, 4 Hz (28,800 vibrations/hour), twin barrel, Glucydur balance, flat balance-spring, Incabloc shock absorber, ceramic ball-bearing mechanism, 311 parts, 48 jewels, 37 mm in diameter, 8 mm thick, circular-grained baseplate, bridges adorned with Côtes de Genève, rhodiumed or engraved, beveled finish, circular satin-brushed wheels, 50-hour power reserve
Patented GMT module, developed by Centagora, 118 parts, 20 jewels, 4.3 mm thick
Hours, minutes, small seconds, dual-time display with day/night indication, GMT zone indicator
Display home time between 10 and 11 o’clock
Dual-time display with day/night indication at 3 o’clock
GMT zone indicator between 1 and 2 o’clock
Small seconds at 6 o’clock
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