A. Lange & Söhne Lange 1 Perpetual Calendar 345.036

The Lange 1 is one of the most recognizable dials in modern watchmaking, and the Perpetual Calendar builds a full jumping calendar onto that asymmetric layout without losing its balance. Reference 345.036 does it in 950 platinum with a solid silver black dial, a combination that gives the display real depth. The off-center time sits beside Lange's outsize date, with a retrograde day-of-week, a peripheral month ring, a leap-year indicator, and a moon phase with day-night display worked into the small seconds, every calendar reading jumping instantly at midnight. The 42mm case shows the manufacture Caliber L021.3 through a sapphire back: a self-winding movement with a 21k gold rotor, German silver plates, a hand-engraved balance cock, and a 50-hour reserve. It wears on a hand-stitched alligator strap, water resistant to 30m. Brand new with box and papers, this Lange 1 Perpetual Calendar joins the A. Lange & Söhne Watches at Grand Caliber for the collector who wants Saxon watchmaking at its most complete.