The A. Lange & Söhne Datograph Handwerkskunst 405.048F is a limited edition watch, with only 25 pieces made. It's crafted with a yellow gold case and unique designs on the dial and movement. The main dial is black-rhodiumed and the totalisers are rhodiumed with a detailed tremblage engraving. The bridges on the three-quarter plate are also intricately textured in German silver. Although it's from the same generation as the Datograph, this model doesn't have a power reserve indicator.