Apart from iconic designs, the A. Lange & Sohne signature stands for mechanical ingenuity. It permeates all models of the 1815 watch family, and particularly the 1815 Up/Down launched this year. The timepiece, whose name stands for Ferdinand A. Lange's birth year, melds the characteristics of a legacy that began in the early 19th century with contemporary horological know-how, resulting in a fusion of the arts honed to sleek perfection. The timepiece also features the three-quarter plate, details like the hand-engraved balance cock, the classic screw balance, or the gold chatons secured by thermally blued screws.