Jaeger-LeCoultre Grande Reverso Ultra Thin Duoface (With Dual Time & Day Night Indicator)

In 2011, to mark the 80th anniversary of the Reverso, Jaeger-LeCoultre presented the Grande Reverso Ultra Thin 1931 in tribute to this iconic watch that has remained as unique as ever. In 2013, the year of its 180th corporate anniversary, the Manufacture unveils the Grande Reverso Ultra Thin Duoface, an ultra-thin model revealing the watchmaking genius of Jaeger-LeCoultre by introducing a dual time-zone display on its back.

Loyal to the spirit of the original Reverso, the Grande Reverso Ultra Thin Duoface salutes a technical feat that dates back to 1944. At that time, a resounding “eureka” rang out in the research and development laboratory of the Grande Maison when the work jointly conducted by watchmakers and designers gave birth to the very first movement capable of controlling the indications displayed on two separate dials: the Duoface concept. It soon became obvious that this mechanical breakthrough, which is still an exclusive Jaeger-LeCoultre feature, made it possible to offer watchmaking connoisseurs a decidedly original dual time-zone display. In this respect, the Grande Reverso Ultra Thin Duoface doubtless embodies one of the characteristics most appreciated by contemporary men whose activities and passions often keep them crisscrossing the world’s 24 time zones.

Entirely in keeping with the original model, its silvertoned dial is graced with baton-type hour-markers swept over by black dagger-shaped hands. The inscription REVERSO also faithfully reflects the design used on the first watch with a swivel case introduced in 1931, while the small seconds at 6 o’clock provides an ever-useful additional indication. Spin around the case, and you can view a second dial, this model nonetheless springs a surprise effect with this second black dial featuring a “Clous de Paris” hobnail guilloché motif and displaying a main chapter ring with 12 subdivisions to display the second time zone, while the 24-hour indication appears below in the form of a circle bearing the words “NIGHT” on the left and “DAY” on the right.

A new push-piece, seamlessly integrated within the side of the case, enables comfortable adjustment of the second time zone in one-hour increments. Total thickness of Duoface model is 9.14 millimetres.

The mechanical manually-wound movement, Jaeger-LeCoultre Calibre 854/1, comprises 180 parts and its balance oscillates at a frequency of 21,600 vibrations per hour – while measuring just 3.80 thick and incorporating the latest results of Jaeger-LeCoultre’s research in terms of precision and reliability. The Grande Reverso Ultra Thin Duoface comes in 18-carat pink gold or steel. The two versions are teamed with a black alligator leather strap complete with a buckle matching the case.

Technical details
Model: Grande Reverso Ultra Thin Duoface (Ref. Q3782520 & Ref. Q3788570)

Movement
Mechanical manually-wound, Jaeger-LeCoultre Calibre 854/1
21,600 vibrations per hour
180 parts
21 jewels
3.80 mm thick

Functions
Front: Hours, minutes, small seconds
Back: 2nd time zone, 24-hour night and day indicator

Dial
Front: Silvered satin / opaline, transferred hour-markers / powdered numerals and hourmarkers
Back: Black Clous de Paris, transferred hour-markers

Hands
Hour and minute
– Front: Baton-type, faceted, polished black nickel / gold-plated
– Back: Skeletonized with white superluminova, polished, rhodium-plated
Small seconds. Baton-type with pear-shaped counterweight in black nickel / gold-plated
Night & Day Indicator. Skeletonized with white superluminova, polished, rhodium-plated

Case
In steel or 18-carat pink gold
Polished finishing
Sapphire crystals
Water-resistant to 30 metres

Strap and buckle
Matt black alligator leather 20/18
18 mm steel or 18-carat gold pin buckle

References
18-carat pink gold: Q3782520
Steel: Q3788570

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