Jaeger LeCoultre Q8102520 Geophysic Universal Time True Second 18k Rose Gold UNWORN (27598)

27598 Jaeger LeCoultre Q8102520 Geophysic Universal Time True Second, 8102520, 18k rose gold case on a leather strap with a rose gold tang buckle, Automatic Caliber 772, 40 hour power reserve, "True Second" (dead beat seconds), second hairspring to assist in maintaining power reserve for dead beat seconds, blue lacquer dial displaying cities in 24 time zones, luminous polished steel hands, sapphire crystal, display back, water resistant to 50 meters, diameter: 42mm, thickness: 12mm, UNWORN with Original Box and Papers, dated October 2015.

$15,500

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More about Jaeger LeCoultre Q8102520 Geophysic Universal Time True Second 18k Rose Gold UNWORN

This is an 18K rose gold Jaeger LeCoultre Geophysic Universal Time, 8102520. It has an alligator leather strap with an 18K rose gold tang buckle, and a scratch resistant sapphire crystal. It has a world time complication, a push/pull winding crown, an exhibition sapphire skeleton display case back, and true (dead beat) seconds. The 41.6mm diameter solid three-body case, flat bezel, and downturned lugs are polished. It has a blue lacquer dial with engraved continents and oceans, luminescent alpha hands and applied faceted baton hour index markers. It includes a center sweep seconds hand, minute/second markers, an outer day/night 24-hour time zone ring, and 24 world time city names around the outer rim. It's anti-magnetic, with a soft iron core, and it includes the Certified Official Swiss Chronometer (COSC) rating. It has independent hour adjustment, a 40-hour power reserve, and it's water resistant to 50 meters/165 feet. The 11.8mm thick case, dial, and movement are all signed.

The mechanical automatic self-winding Jaeger LeCoultre caliber 772 movement is rhodium-plated, with fausses cotes and oeil-de-perdrix embellishment. It's constructed using 36 jewels, 274 components, a shock absorber mechanism, and the patented Gyrolab balance wheel. It includes a straight-line lever escapement, a monometallic balance that's adjusted to 6 positions, and a self-compensating flat balance-spring. It has a 22 K gold rotor segment, a hacking seconds mechanism, a gold oscillating wheel, and micro screws on the balance for regulation. It oscillates at a frequency of 28,800 vph (4 Hz).