A. LANGE & SÖHNE. A VERY RARE AND FINE 18K PINK GOLD LIMITED EDITION ONE MINUTE TOURBILLON WRISTWATCH WITH CHAIN FUSEE, POWER RESERVE AND BLACK DIAL
Prospective purchasers are advised that several co… Read more
A. LANGE & SÖHNE. A VERY RARE AND FINE 18K PINK GOLD LIMITED EDITION TOURBILLON WRISTWATCH WITH CHAIN FUSÉE, POWER RESERVE AND BLACK DIAL

SIGNED A. LANGE & SÖHNE, GLASHUTTE I/SA, TOURBILLON, POUR LE MERITE MODEL, NO. 107/150, REF. 701.011, MOVEMENT NO. 432, CASE NO. 110'357, CIRCA 1999

Details
A. LANGE & SÖHNE. A VERY RARE AND FINE 18K PINK GOLD LIMITED EDITION TOURBILLON WRISTWATCH WITH CHAIN FUSÉE, POWER RESERVE AND BLACK DIAL
SIGNED A. LANGE & SÖHNE, GLASHUTTE I/SA, TOURBILLON, POUR LE MERITE MODEL, NO. 107/150, REF. 701.011, MOVEMENT NO. 432, CASE NO. 110'357, CIRCA 1999
Cal. L902.0 three quarter plate untreated German silver lever movement, 29 jewels, screwed gold chatons, power equalization with chain fusée, gold lever and gold escape wheel, finely hand-engraved gold bridges, the three-armed polished steel tourbillon carriage with Glucydur balance and two diamond endstones visible through a glazed aperture in the solid silver black dial with applied pink gold lozenge-shaped numerals, pink gold hands, two subsidiary dials indicating constant seconds and 36 hours power reserve, circular case with downturned lugs, glazed display back secured by six screws, 18K pink gold A. Lange & Söhne deployant clasp, case, dial and movement signed
38 mm. diam.
Special notice

Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory, tortoiseshell and crocodile. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.

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Lot Essay

US$125,000-187,500

With A. Lange & Söhne Guarantee Certificate dated 25 March 1999, original sales tag, additional buckle and strap, instruction manual, original fitted presentation box and outer packaging

The present watch is number 107 of a limited series of 150 pieces only and is in overall excellent condition.

Lange's Tourbillon "Pour le Merite", another example of the company's complex and exclusive timepieces, incorporates a number of fascinating technical details never seen before in a wristwatch, amongst them the going train driven with a chain fusee. This complicated mechanism optimises the rate accuracy of the watch and is visible through an aperture in the movement plate. A highly sophisticated planetary gearing system keeps the power to the going train steady even while the watch is being wound.

It appears that the "Pour le Merite" Tourbillon is one of only two wristwatches known today fitted with a chain and fusee for the power equalization. The second model is its even more complicated twin, the "Tourbograph Pour le Merite" wristwatch with tourbillon and split seconds chronograph, introduced into the market in 2006.

The tourbillon mechanism also serves the purpose of improving rate accuracy by offsetting the disruptive effect of gravity. The rotating cage is suspended by two pivots between two diamond endstones. It turns around its own axis once a minute and can be precisely balanced with small counterweights.

All parts of the watch are finished by hand and every surface is decorated. Consequently, the completion of each of these masterpieces requires several months.

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