Case, dial, and hands are in pink gold. The big news here is the dial: it’s decorated with the “tremblage” engraving which has become something of a signature for the Handwerkskunst watches. This may look simple but it’s a fiendishly demanding technique. The engraver uses a burin (a very fine tipped, hardened steel engraving tool) to make thousands of minute incisions in the surface of the metal. The marks may look random but they are anything but – each mark must be made so as to provide the best contrast to those around it, and the technique requires great skill, as well as great intuition as to how to make the entire composition succeed.

The Lange & Söhne 1815 Tourbillon Handwerkskunst is a limited edition of 30 pieces worldwide. Movement, Lange caliber L102.1, hand wound, adjusted in five positions; plates and bridges made of untreated German silver (maillechort) three-quarter plate with granular surface and hand-engraved inscriptions; seconds bridge engraved by hand.

Final pricing is subject to change but Lange tells us it’ll be roughly in the range of $181,000 USD.