German-watchmaker A. Lange & Sohne has a superb and sophisticated
collection this year. There are some line extensions, but also some
incredible — and I mean incredible — high complications. Believe it or
not, the 1815 Rattrapante Perpetual Calendar is NOT the most complicated
piece from Lange this year. But it as good a place as any to start.
This piece which so elegantly unites two classic complications
(split-seconds and perpetual calendar), is offered in both platinum case
and pink gold case. The “1815″ is a reference to the birth year of
Ferdinand A. Lange. I’ve got super high-res images and specs, on the
jump — including a close look at the Lange Caliber L101.1
A. Lange 1815 Rattrapante Perpetual Calendar
(Ref. 421.025 platinum, Ref 421.032 pink gold)
41.9 mm case (14.7 mm thick) in platinum or pink gold
Functions:
Hours and minutes. Subsidiary seconds dial with stop seconds. Rattrapante chronograph with minute counter. Perpetual calendar with date, day-of-week, month, and leap-year display. Moon-phase display. UP/DOWN power-reserve indicator, 42 hours power reserve.
Hours and minutes. Subsidiary seconds dial with stop seconds. Rattrapante chronograph with minute counter. Perpetual calendar with date, day-of-week, month, and leap-year display. Moon-phase display. UP/DOWN power-reserve indicator, 42 hours power reserve.
The design of the watch showcases several traditional details, such
as the classic Arabic numerals, the railway-track minute scale, and the
symmetrical arrangement of the subsidiary dials.
Lange Caliber L101.1
32.6mm x 9.1mm, 631 parts, lever escapement, 42 hr power reserve,
Shock-resistant screw balance, superior-quality balance spring
manufactured in-house, frequency 21,600 semi-oscillations per hour,
precision beat adjustment system with lateral setscrew and whiplash
spring
In implementing the chronograph and rattrapante functions, the
perpetual calendar and the power-reserve indicator, Lange’s master
watchmakers made a point of using traditional elements as once
integrated in A. Lange & Söhne’s historic pocket watches.
The surface of the tiny rattrapante split-seconds clamp alone is
adorned with three different techniques: straight graining,
circumferential polish as well as chamfer polish.
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