Lange 1 Moonphase Day / Night Pink Gold / Silver

The Lange 1 was introduced on October 24, 1994 — the day A. Lange & Söhne announced its return to watchmaking after more than four decades of silence. It was one of four watches unveiled that day and immediately established the brand’s identity: asymmetric dial layout, outsize date, subsidiary seconds, and a level of hand-finishing that had not been seen in German watchmaking for a generation. The asymmetry was deliberate — a rejection of the convention that a watch dial must be symmetrical — and it created a composition that rewards extended study. Every subsequent generation of the Lange 1 has refined the movement and dial without changing the essential character of the reference.

Building on the foundations of the Lange 1, the Moonphase variant adds one of the most astronomically precise moon displays in production watchmaking. Rather than rounding the lunar month to 29.5 days — which introduces a one-day error every 2.5 years — the L121.3 calibre reproduces the synodic month of 29.531 days to an accuracy of 99.998%, requiring correction only once every 122.6 years. The celestial disc varies between a bright daytime blue and a deep starry night sky, so the moon always orbits against an accurate background. Pink gold case, silver dial, and the characteristic asymmetric layout of the Lange 1 family complete the reference.