LANGE 1 TOURBILLON PERPETUAL CALENDAR HANDWERKSKUNST
Exquisite artisanship for perpetuity
Featuring a tourbillon with the patented stop-seconds mechanism, a perpetual calendar with an outsize date, day-of-week display, month ring, leap-year and moon-phase displays as well as a day/night indicator, the LANGE 1 TOURBILLON PERPETUAL CALENDAR is the technically most complex model of the LANGE 1 watch family. Presented in 2013, the HANDWERKSKUNST edition, limited to 15 watches in platinum, is endowed with a white-gold dial decorated with manually executed tremblage and a relief engraving. The top side of the tourbillon cage is black-polished by hand. This is one of the most elaborate finissage techniques.