Jaeger-LeCoultre Grand Master Tourbillon

About this reference

The Jaeger-LeCoultre Master Grand Tourbillon reference Q1662450 was introduced in the mid-2000s and remained in production for approximately a decade before being discontinued. This reference features a 43mm case constructed from 18k pink gold and is powered by the automatic Calibre 978. This movement is historically significant for winning the 2009 International Chronometry Competition organized by the Le Locle Clock and Watch Museum. The dial is characterized by a silvered sunray finish and a large aperture at 6 o’clock revealing the titanium tourbillon carriage. Collectors value this model for its technical precision and the use of a high-frequency 28,800 vph escapement within a tourbillon regulator. On the secondary market, this reference typically trades between $40,000 and $55,000 depending on condition and provenance. A notable production detail is the use of a 22k gold oscillating weight, visible through the sapphire crystal caseback.