Jaeger-LeCoultre. An extremely fine, historically important and unique yellow gold anti-magnetic chronometer wristwatch with hack feature.
Dial is signed Jaeger-LeCoultre, Chronometre Geophysic, ref. E168, manufactured in 195. Watch was serviced in 2016 and runs perfectly. A new correct crystal has been installed and the 5 minute markers were lumed onto it. It comes with the crystal that was on the watch.
Movement is Cal. 478/BWSbr nickel-finished lever movement, 17 jewels, soft iron anti-magnetic cap, signed LeCoultre.
White dial, applied gold baton and Arabic 3, 6, 9 and 12 numerals, luminous sword hands, indirect sweep center seconds, hack feature, circular water-resistant-type screw back case. There were only 222 made in gold. This particular watch also has the crosshair dial which is very rare. There is an excellent discussion on the cross hair dial on Watch Prosite.
The 1958 Geophysic Chronometer must be considered amongst the most important models in the history of Jaeger-LeCoultre, representing the manufacturer’s values of precision, robustness and aesthetic purity. Made at a time of fundamental scientific and political developments, it was directly involved in this historical context.
The models were fitted with Jaeger-LeCoultre’s first chronometer movements developed in 1957, new water-resistant cases with soft iron domes to protect the movement from magnetic field influence up to 600 gauss, hence meeting the needs of research scientists who could be working on polar bases, in laboratories or inside submarines.