A. Lange & Sohne Richard Lange Watch, limited edition of 100 pieces, round platinum case (41.9mm diameter x 12.1mm thickness) with transparent caseback, black hand sticked crocodile leather strap with a platinum clasp, silver dial with black Roman numerals and silver hands, the hours subdial is at 5 o'clock, sweeping minutes at 12 o'clock, and an exposed tourbillon cage at 7 o'clock with running seconds , calibre # L072.1 manual-winding movement with tourbillon functions, 36 hour power reserve.
The Richard Lange ?Referenzuhr? is a precise time-measuring instrument that is suitable, for example, for synchronizing watch collections. With this extraordinary feature, it salutes the Time-Keeping Service of the Mathematics and Physics Salon in 18th-century Dresden.
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