The A. Lange Söhne Tourbillon "Pour le Mérite" was part of the four models launched in 1994 that launched the return of the prestigious Glashütte-based brand to the forefront of haute horlogerie. It was produced from 1994 to 1998, in a limited edition of 149 pieces in gold (106 pieces in yellow gold, 19 pieces in white gold and 24 pieces in pink gold), 50 pieces in platinum and one in stainless steel. This tourbillon chronometer is without any doubt the most prestigious and collectible of all wristwatches ever produced by A. Lange & Söhne. The Pour le Mérite, is named after the order of merit established in 1740 by King Frederick II of Prussia, and conferred as a recognition of extraordinary personal achievement.
The present lot incorporates a number of fascinating technical details that had never been seen before in a wristwatch, among them an exceptional movement that integrates a chain and fusée to equalize the mainspring’s power. This complicated mechanism optimizes 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. 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 end stones. It turns around its own axis once per 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 required several months. This exceptional timepiece is a superlative example of the best technical features, fine aesthetic appeal, flawless execution and craftsmanship.