LANGE 1 TOURBILLON 165 Years – Homage to F. A. Lange Collection/en

LANGE 1 TOURBILLON
165 Years – Homage to F. A. Lange Collection

The LANGE 1 TOURBILLON with stop seconds
Reference 722.050

At the turn of the millennium, A. Lange & Söhne presented the LANGE 1 TOURBILLON based on the legendary LANGE 1. At that time, it was not yet possible to achieve what Lange’s calibre engineers accomplished a few years later with the CABARET TOURBILLON: to directly and instantaneously stop the balance inside the rotating tourbillon cage. With this feat, they corrected an intrinsic flaw of the tourbillon mechanism that for two hundred years was considered to be the ne plus ultra of horological sophistication. While the elaborate device elevated the rate accuracy of a watch by overcoming the effects of gravity, it could not be stopped, so the watch could not be set to the second. Lange’s ingenious solution to the problem – the patented stop-seconds mechanism – is now integrated in the LANGE 1 TOURBILLON of the anniversary collection as well. It expresses Lange’s long-standing principle of questioning the validity of even what is already considered perfect.

The crowning conclusion of this rare opus is a mirror-polished bar made of honeycoloured gold that is precisely embedded in the dial and carries the tourbillon cage on the dial side. A further special feature of this watch is the fact that the one-minute tourbillon is suspended between diamond endstones on both sides. A hallmark that Ferdinand Adolph Lange once introduced to sign the 1A quality category of his pocket watches.

Reference: 722.050 Movement: Lange manufacture calibre L961.2, manually wound, crafted to the most exacting Lange quality standards and largely decorated and assembled by hand; precision-adjusted in five positions three-quarter plate made of untreated German silver crown wheel cock with sunburst finish intermediate wheel cock and tourbillon bar in honey-coloured gold, movement side engraved by hand Diameter: 30.6 millimetres; height: 5.9 millimetres No. of movement parts: 381 No. of jewels: 51, of which 2 diamond endstones Escapement: Lever escapement Oscillation system Shock-resistant glucydur screw balance, superior-quality balance spring manufactured in-house, frequency 21,600 semi-oscillations per hour, whiplash precision index adjuster Power reserve: 72 hours when fully wound Functions: Time display in hours, minutes, subsidiary seconds Lange outsize date power-reserve indicator one-minute tourbillon with patented stop seconds Operating elements: Crown for winding the watch and setting the time date correction push piece at 10 o’clock Case: Diameter: 38.5 millimetres; height: 9.8 millimetres Honey-coloured gold Glass and caseback: Antireflection-coated sapphire crystal Dial: Solid gold, argenté, guilloched Hands: Honey-coloured gold Strap: Hand-stitched, red-brown crocodile strap with Lange prong buckle in solid honey-coloured gold Edition: 150 watches