A. Lange & Söhne Grand Lange 1 Moon Phase

The A. Lange & Söhne Grand Lange 1 Moon Phase, reference 139.021, has a moon-phase display and a 41 mm case in 18-carat yellow gold. The dial is crafted from solid silver, with a depiction of the moon and starry sky in the hour and minute circle. An outsize date and power-reserve indicator appear on the dial. The case measures 9.5 mm in height, with 20 mm between the lugs. Manual-winding calibre L095.3 contains 446 parts, runs at 21,600 semi-oscillations per hour and has a 72-hour power reserve. The case has a see-through back and a 30 metre rating. An 18-carat yellow gold pin buckle closes a middle brown alligator leather strap.