1958 marks a very significant year for luxury in-house watchmaker Jaeger-LeCoultre. This was the year that the Geophysic chronometer was created, which was the International Geophysical year and is an icon that symbolizes precision and reliability.
The original 478BWSbr movement caliber was heavily influenced and designed from military watches and makes use of the best watchmaking technology from that time period including: 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.
Now in 2014, Jaeger-LeCoultre pays tribute to perhaps one of their most important pieces from their heritage by releasing three limited edition watches, a steel version limited to 800 pieces. a pink gold version limited to 300 pieces and a platinum version limited to 58 pieces which will be available exclusively at Jaeger-LeCoultre boutiques only.
This modern-day tribute boasts a slightly larger than the original 38.5 mm case, an extremely reliable and sound in house 898/1 calibre movement to be in line with the original based on research linked to the geophysical year.
This incredibly precise 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 soft- iron inner case that protects the mechanism from the effects of magnetism.
The hour and minute dagger hands are rhodium plated in the steel and platinum versions and gold toned in the pink gold version and are clean, bold and legible while maintaining the integrity of the original. The stainless steel and pink gold models have the four Arabic numerals of 12,3,6,9 while the platinum version is distinctive from the other two bearing only the Arabic numerals of 12 and 6. The platinum version also bears the Geophysic inscription at the twelve o’clock under the Jaeger-LeCoultre logo while the steel and pink gold models bear this inscription at the six o’clock position above the numeral six.