1815 Tourbillon Handwerkskunst Anniversary Special Limited Edition

1815 TOURBILLON is the first Lange watch that combines a tourbillon stop-second device and a zero reset device. This year marks the 200th anniversary of Ferdinand Adolph Lange. At the end of the year, the brand has launched a limited edition HANDWERKSKUNST to decorate this top with original dial design and movement decoration. Precision watch.
   The German word ‘Handwerkskunst’ is interpreted as craftsmanship. Lange has named this special limited edition watch since 2011. Its dial and movement are combined with subtle modification and engraving technology. Lange Watch Factory presented 1815 TOURBILLON HANDWERKSKUNST on December 7, 2015. This new work not only injects extraordinary decorative elements, but also has two patented devices.
   The zero-reset function introduced by Lange in 1997 was combined with the tourbillon stop-second device which was introduced in 2008. These devices allow the stop and set functions of the watch to be accurate to the second.

   This special edition watch with a 39.5mm diameter 18K rose gold case is limited to 30 pieces. In commemoration of the 200th anniversary of the birth of Ferdinando Adolf Lange, the brand launched the fifth HANDWERKSKUNST watch this year to pay tribute to the pioneer of precision watchmaking in Saxony.
   The biggest difference between this watch and the 2014 model is the dial. The new dial is made of black rhodium-plated 18K rose gold and should have a delicate ‘tremblage’ engraving. The engraver uses a special carving knife to create a fine and uniform grainy texture on the material. The embossed elements of the dial, including the dazzling curved brand logo and numbers, are mirror-polished to contrast with the dark black background. The large window of the dial shows the operation of the tourbillon. The top of the tourbillon bridge and frame is black polished, which is a very complicated and time-consuming modification technique.

1815 TOURBILLON HANDWERKSKUNST’s movement combined with rare modification technology

   In the magnificently decorated L102.1 homemade movement, every detail reflects precise mechanical characteristics. The newly designed 3/4 splint is unique in its elegant curve. Thanks to the large hollow design, the wearer can easily view the tourbillon combined with the patented stop-second device, as well as the barrel and gear train parts. The grained surface of the German silver splint is derived from the design of a historical pocket watch. Chamfer polishing at concave corners is even more of a challenge, and must be done manually by using specially designed sharp tools. The four-wheeled bridge also adopts a hollow design, which is convenient for viewing the tourbillon. Like the splint and bottom cover, this bridge is also exquisitely carved. Tourbillon diamond end stones make the movement decoration more prominent.

Movement The Lange watch factory manufactures its own L102.1 movement, which is wound by hand and meets Lange’s strictest quality standards. It is carefully modified and assembled by hand; five-way precision adjustment; the plywood and bridge are made of untreated German silver. Manufacturing; 3/4 plywood with grained surface and hand lettering; hand-carved four-wheel bridge
Movement parts 262
Gem bearing 21, including 1 diamond end stone
Screwed gold sleeve 5
Escapement system lever escapement system
Oscillation system Anti-vibration screw balance; watch factory-made balance spring, vibration frequency up to 21,600 times per hour
Power reserve: 72 hours after fully winding
Functions: Hours, minutes and small seconds; one-minute tourbillon with patented stop-seconds function and patented zero reset device
Operating element Crown for winding, setting time and starting zeroing device
Case dimensions Diameter: 39.5 mm; Thickness: 11.1 mm
Movement size diameter: 32.6 mm; thickness: 6.6 mm
Crystal and case back Sapphire crystal (Mohs hardness 9)
Limited edition of 30 pieces
Case 18K rose gold, case back with hand lettering
Dial 18K rose gold, black rhodium-plated; ‘tremblage’ engraving
Hands 18K rose gold hour and minute hands; blue steel seconds hand
Strap Hand-stitched crocodile leather strap, reddish brown
Clasp 18K Rose Gold Folding Clasp