SPECIFICATIONS:
A. Lange & Söhne 1815
TOURBILLON
(Ref. 730.079F)
Movement: Lange
manufacture caliber
L102.1, manually wound,
decorated and assembled
by hand; precision-
adjusted in five positions;
plates and bridges made
of untreated German
silver; seconds bridge
engraved by hand,
72-hours power reserve,
shock-resistant screw
balance; balance spring
manufactured in-house
with a frequency of
21,600 semi-oscillations
per hour
Functions: Time
indicated in hours,
minutes, and subsidiary
seconds; one-minute
tourbillon with patented
stop-seconds mechanism
and patented zero-reset
mechanism, Crown for
winding the watch,
setting the time, and
activating the zero-reset
mechanism
Dial: Copper, white
enamel with blued steel
hands
Case: 39.5mm by 11.3mm
platinum
Strap: Hand-stitched
alligator leather, black,
Lange deployant buckle
in platinum
The A. Lange & Söhne
1815 Tourbillon.
DIAL UP
A. Lange & Söhne’s 1815 Tourbillon gets an enamel dial.
BY MICHAEL THOMPSON
42 | INTERNATIONAL WATCH | FALL 2018