A. Lange & Söhne 1815 Up/Down Pink Gold 234.042

The Up/Down takes its name from the power reserve indicator, whose scale runs from "Ab" (down) to "Auf" (up). It is driven by the calibre L051.2, a manually wound movement with a 72-hour power reserve, and the dial keeps the 1815's Arabic numerals. The case takes a 20 mm strap.

Its twin is the white gold 234.041, with the same Wempe name, blue dial and run of 25. The regular pink gold 1815 Up/Down, 234.032, shares the 39 mm case and the L051.2 but has a silver dial and is not limited.