Jaeger-LeCoultre Geophysic® 1958

With this new exceptional mechanical timepiece, Jaeger-LeCoultre pays tribute to a legendary timepiece launched in 1958 during International Geophysical Year. One of the most important models in the Jaeger-LeCoultre heritage, the Geophysic® chronometer, created in 1958, has served as the quintessential symbol of precision and reliability with a design of undeniable purity. Its calibre 478BWSbr movement is derived from military watches and incorporates the best watchmaking technology of that time: a stop second for precise time setting; a glucydur balance for stability through changes in temperature and fitted with a shock absorber; a “swan neck” index for micrometric adjustment; and the essential soft-iron inner case that protects this exceptional mechanism from the effects of magnetism.

In 2014, Jaeger-LeCoultre pays tribute to this legendary timepiece by unveiling exclusive watches – a model in steel and in pink gold and a model in platinum. A synthesis of the research and technical expertise of the Manufacture Jaeger-LeCoultre, these timepieces are driven by an automatic movement boasting tried and tested reliability and resistance. They feature a diameter of 38.5 mm, taking account of contemporary preferences while remaining entirely true to the design of the original model with a pure, highly legible dial.

Jaeger-LeCoultre Geophysic® 1958, Pink Gold

It was during the International Geophysical Year that the study of sea beds served to confirm the theory of plate tectonics. The still little-known poles were the focus of universal attention and permanent observations stations were set up in the Antarctic. In the same year, USS Nautilus, the world’s first operational nuclear-powered submarine created a history by making a submerged transit from the Atlantic Ocean to the Pacific Ocean by travelling under the ice cap covering the North Pole. The Manufacture Jaeger-LeCoultre had contributed its horology expertise to this event with the Geophysic® chronometer timepiece. This exceptional instrument had been designed to withstand magnetic fields of up to 600 gauss and to maintain its prodigious precision in all circumstances.

Inspired by the original model, the design of the new watches further enhances the excellent legibility and aesthetic distinction of the historic instrument. The three models paying tribute to the Geophysic® feature a slightly larger diameter of 38.5 mm to meet the comfort requirements of the 21st century. In the spirit of the calibre 478BWSbr, based on research linked to the Geophysical Year, they are equipped with the Jaeger-LeCoultre Calibre 898/1, considered one of the most precise and reliable in-house automatic movements on the market today.

This exceptional movement combines the best technology of the 21st century: a stop second for accurate time-setting; a frequency of 28,800 vibrations per hour for high precision; a balance with micrometric adjustment by means of screws set into the rim; kifparechoc for shock resistance; Spyr gears for smooth transmission of torque in the gear train; automatic winding with ceramic ball bearings that require no lubrication, and more, all without counting the softiron inner case that protects the mechanism from the effects of magnetism.

Three central hands indicating the hours, minutes and seconds glide steadily over the grained white dial bearing the inscription “Geophysic®” along with the brand signature at 12 o’clock. The circle of applied hour-markers is interrupted by 3, 6, 9 and 12 o’clock numerals, thereby reproducing the layout and design codes of this legendary model.

Jaeger-LeCoultre Geophysic® 1958, Stainless Steel

These Haute Horlogerie timepieces offering a unique combination of usefulness and aesthetic appeal bear the unmistakable imprint of the Grande Maison, as reflected in the luminescent coating in the historical colour on the dots facing the hour-markers around the inner bezel ring. Meanwhile, the dagger-shaped hands are rhodium-plated on the steel version and radiate a warm golden glow on the 18-carat pink gold variation. Entirely in tune with the perfectly restrained dial of which the purely functional nature accentuates the timeless elegance, the refined case embodies a range of truly exceptional qualities. Water-resistant to 100 metres, its back displays the signature emblem playing with the J and L initials of Jaeger-LeCoultre superimposed on a globe criss-crossed by latitude and longitude lines.

Each version of the Geophysic® watch is fitted with an alligator leather strap secured by an unusual pin buckle in colours matching the metal of the case: black for the steel model and chocolate brown for the pink gold variation.

The Geophysic® 1958 watch will be available in an 800-piece limited edition for the steel version, while the 18-carat gold model will be issued in a 300-piece limited series.

Jaeger-LeCoultre Geophysic® 1958 Platinum, Boutique Edition

A platinum model, produced in a limited series of 58 pieces, will also be available in 2014. Another aspect of the Geophysic® watch is the dial with hand-applied markers, numerals at 6 and 12, and rhodium-plated, dagger-shaped hands indicating hours, minutes and seconds. This version is mounted on a blue alligator strap.

Today, all Jaeger-LeCoultre watches have to pass the 1000 hours control to prove their precision and reliability. With this series of internal tests, the Manufacture Jaeger-LeCoultre sets a new standard for watchmaking quality. Unlike chronometer testing that only concerns one part of the movement, the 1000 hours control submits the whole cased-up watch to six weeks of testing, in six positions, while rotating and at rest.

Technical details
Model: Geophysic® 1958 watch

Mechanical automatic Jaeger-LeCoultre Calibre 898/1
43-hour power reserve
202 parts
29 jewels
28,800 vibrations per hour
3.30 mm thick

Steel and pink gold version: “Geophysic®” inscription at 6 o’clock, Jaeger-LeCoultre signature at 12 o’clock / 3, 6, 9 and 12 numerals and applied hour-markers, rhodium-plated (steel version) and gold-toned (pink gold version)/ Luminescent indicators

Platinum version – boutique: “Geophysic®”inscription and Jaeger-LeCoultre signature at 12 o’clock/ 6 and 12 numerals and applied hour-markers, rhodium-plated/ luminescent indicators

Hours, Minutes: dagger-shaped, rhodium-plated (steel and platinum version) and goldtoned (pink gold version)
Central seconds

Hours, minutes, seconds

38,5 mm in diameter
11.40 mm thick
Soft-iron inner case
Case-back engraving in tribute to the International Geophysical Year
Polished bezel and lugs, satin-brushed case middle
Water-resistance: 10 bar

Strap and buckle
Steel version: black alligator leather strap, pin buckle in stainless steel
Pink gold version: chocolate brown alligator leather strap, pin buckle in 18 ct pink gold
Platinum version: blue alligator leather strap, pin buckle in platinum

Steel version: Q8008520, limited edition of 800
18 ct pink gold version: Q8002520, limited edition of 300
Platinum version: Q800652j, limited edition of 58 available exclusively in Jaeger LeCoultre boutiques

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