Sihh 2015 Jaeger-lecoultre Pocket Watch Timepiece Overture To Astronomy

The pocket watch was originally a miniature version of the clock, which appeared as early as the 15th century. For centuries, however, the key was needed to wind a pocket watch, and this situation did not change until the nineteenth century. Antoine LeCoultre, the founder of the Jaeger-LeCoultre workshop, is a self-taught watchmaking genius who invented a revolutionary machine called the ‘lever-winding crown’ and developed a safe The reliable mass production system makes the keyless winding system widely used.
   Since 1870, driven by Elie LeCoultre, the son of Anthony, the watch factory has launched some of the complex function timepieces manufactured with mechanized technology, which have been highly praised for their precise and reliable performance. Jaeger-LeCoultre sells its movements to the top watchmaking companies in Switzerland and around the world.
   Since the end of the nineteenth century, ‘super complex watch’ means when the watch is equipped with three representative complex functions, including perpetual calendar, chronograph and minute repeater. Jaeger-LeCoultre watchmakers draw inspiration from the movement of the earth and the complications of the calendar, adding perpetual calendar display to many timepieces, leading watch connoisseurs to explore the mysteries of celestial bodies.

1890 Minute Repeater with Almanac and Date Retrograde Function
  This watch is equipped with an annual calendar function, setting a precedent for the perpetual calendar complication. This pocket watch indicates the date with the sun on the central retrograde hand and displays the day with an engraved time dial. The oval window shows the moon phase and the sub-dial shows the month. Large open flame enamel dial, finely carved 18K yellow gold case, LeCoultre 19HPSM mechanical movement.

Circa 1895, superb complexity
   As early as the 20th century, the Jaeger-LeCoultre workshops produced the first superbly complex watches. This pocket watch is equipped with a perpetual calendar function: the day and date display window, and the month, leap year and moon phase displays. In addition, the pocket watch is equipped with a minute repeater function and a rangefinder, LeCoultre 19 / 20RMCSQ mechanical movement.

1934, Perpetual calendar pocket watch
   The pocket watch is equipped with a calibrated perpetual calendar function, which can automatically operate according to the day of the week, month and leap year without manual adjustment. Pocket watches can display the date, day of the week, month, leap year and moon phase. Large open flame enamel dial. LeCoultre 19LRCB mechanical movement. Stainless steel case.

1949 Jacques-David LeCoultre Calendar Watch
   This piece pays tribute to Jacques-David LeCoultre (1875-1948), who led the watch factory for half a century. This watch is also one of the first to incorporate a calendar complication, displaying the day, date, month, and moon phases. 18K yellow gold case, Jaeger-LeCoultre 486 mechanical movement.