A. Lange & Söhne Grand Lange 1 Moon Phase

The A. Lange & Söhne Grand Lange 1 Moon Phase, reference 139.025, has a moon-phase display within a 41 mm case made of 950 platinum. The grey dial is crafted from solid silver, with the moon and starry sky depicted in the hour and minute circle. The dial carries an outsize date and power-reserve indicator. Case height is 9.5 mm, with a see-through case back and a water-resistance rating of 30 metres. Manual-winding calibre L095.3 contains 446 parts, runs for 72 hours and beats at 21,600 semi-oscillations per hour. A 950 platinum pin buckle secures the black alligator leather strap.