This is an incredibly rare Geophysic E168 in Rose Gold circa 1958 by Jaeger-LeCoultre (JLC). The piece is in mind-blowing original condition with the commemorative “International Geophysical Year” 1958 seal still attached to the case back, and the luminous dots present under the original watch crystal. It is nearly impossible to find an original vintage Geophysic with both of these features still intact, and with the case and dial unpolished. This watch is truly museum-worthy.
The rose Geo features a chronometer-grade, manual caliber P478/BWSBr movement, with 17 jewels, fitted with a spirale Breguet, including a stop-lever design that enables the wearer to hack-set the watch. In keeping with the spirit of the watch as a tool for scientists and explorers, the movement is not decorated, but it exudes an emphasis on accurate timekeeping rather than fine cosmetics. The movement of the Geo was directly descended from the Mark 11’s military grade JLC 488 SBr with some refinements, such as added shock absorption.
The Geophysic was designed with a double case and screw-back for water resistance. The inner case is made of “soft iron” to achieve magnetic resistance of 600 Gauss. The dial is pressure-fit with retaining screws at 4 and 11 o’clock.
This timepiece comes with sharp lugs and age-appropriate surface wear – no scratches or dings. The dial is mint, and the raised numerals and markers are original – as are the luminous hands and crown. Also included is a JLC vintage rose gold buckle.