Quick specs A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen
Price: on request, but count on approx. € 620,000 | approx. CHF 600’000 | approx. $ 620,000 | approx. £ 500,000
Size: 41.5 mm
Reference: 740.055FE – limited to 50 pieces
The A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen marks 25 years of the Datograph. This new and limited version follows the original model from 1999 with reference 403.035. A 39-millimeter platinum version combining a (big) date with a chronograph, which leads to its name Datograph. The model was in production until 2012 and has several other reference numbers related to updates, case material, dial color and strap/bracelet options. Now, this new ref. 740.055FE is limited edition to 50 pieces.
The 41.5-millimeter case is from honey gold, a gold alloy developed and patented by A. Lange & Sohne. They use it for their most special models, it is harder than other gold alloys and it has a hue between pink and white gold. To fit all the complications the thickness of the case is 14.6 millimeters.
All indications light-up in the dark
There is a sapphire crystal dial that is coated with luminescent material: “lumen”. In the dark it lights-up the whole dial with a green-ish hue so all the complications and indications on the dial, including the tachymeter scale, can be read in the dark.
We name all the complications and indications: there are the hours, minutes, and subsidiary seconds, and a tourbillon with stop seconds. Then there is a flyback chronograph with precisely jumping minute counter, and a tachymeter scale. And lastly the perpetual calendar with big date, day of week, month, leap year and day/night indicator. And of course a moon phase display.
The A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen has a power reserve of 50 hours
Through its sapphire case back, the hand-wound A. Lange & Sohne caliber L952.4 can be admired. It is a successor of the first movement used for the Datograph 25 years ago. That Lange caliber 951.1 drives a big date and a flyback column-wheel chronograph. This caliber was succeeded by the caliber 952.1 that has a tourbillon, perpetual calendar and moon phase as well. The new L952.4 is an evolved version of that one.
This manual A. Lange & Sohne caliber L952.4 has 684 components, 57 jewels, with plates and bridges of untreated German silver. It is decorated by hand, with a shock-resistant balance with eccentric poising weights and provides a 50-hour power reserve. Its case back reveals a prominent part of the movement, including the tourbillon which is hardly visible through the sapphire dial on the front.
The price of the Datograph Lumen exceeds half a million
The A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen comes on a dark brown alligator leather strap. It is secured with a deployant buckle that has parts of 18-carat honey gold and 18-carat white gold.
Officially the price is on request but rumors tell the price is around 620,000 US dollars. Including taxes.
| Technical data A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen |
| Reference: 740.055FE – limited to 50 pieces |
| Movement: A. Lange & Sohne caliber L952.4 | Hand-wound | Diameter: 32.6 mm | Thickness: 9 mm | Frequency: 18,000 vph (2.5 Hz) | Parts: 684 | Jewels: 57 | Hours, minutes, seconds, flyback chronograph, perpetual calendar (date, days of the week, month, leap year, day/night indicator), moon phase, tourbillon | Power reserve: 50 hours |
| Case and dial: 41.5 mm | 18 ct honey gold | Thickness: 14.6 mm | Sapphire crystal | Lumen coated sapphire crystal dial | 18 ct honey gold hour and minute hands with luminescent coating | Hands for day of the week and months: 18 ct honey gold | Hands for minute counter and small seconds: 18 ct gold, black rhodiumed | Hands for chronograph seconds: steel with luminescent coating | Transparent sapphire case back | No water resistance |
| Strap: Hand-stitched dark-brown alligator leather | Deployant buckle in 18-carat honey gold and 18-carat white gold |
| Price A. Lange & Sohne Datograph Perpetual Tourbillon Honeygold Lumen: on request, but count on approx. € 620,000 | approx. CHF 600’000 | approx. $ 620,000 | approx. £ 500,000 |
| Website: www.alange-soehne.com |