A. Lange & Söhne Richard Lange

The A. Lange & Söhne Richard Lange, reference 232.021, has an 18-carat yellow gold case and a dial crafted from solid silver. The model continues the manufacture's tradition of scientific observation watches. The case measures 40.5 mm in diameter and 10.5 mm high, has 20 mm between the lugs and a see-through back, and is water resistant to 30 metres. Manual-winding calibre L041.2 is assembled from 199 parts. The movement runs at 21,600 semi-oscillations per hour and has a 38-hour power reserve. A medium brown alligator leather strap fastens with a yellow-gold pin buckle.