1815 MOONPHASE 'HOMAGE TO EMIL LANGE' MODEL, REF. 231.031, NO. 187⁄250, CIRCA 2000

Produced to commemorate the 150th anniversary of Emil Lange’s birth, the present 1815 Moonphase pays homage to watchmaking precision. Made in a limited edition of 250 pieces in pink gold between 1999 and 2000, it features a dial with seven gold appliques representing the Big Dipper constellation. Mizar and Alcor are depicted in the middle of the Big Dipper’s handle. Since Alcor is so small, the ability to distinguish between the two stars was considered a measure of good vision in medieval times.

Highly precise, the moon position is automatically adjusted twice a day on the timepiece and will deviate from the moon's actual orbit by only one day after 386,435 days or 1,058 years of uninterrupted operation. Characteristic of the precision Lange dedicates to finishing and detail, the movement is crafted with a three-quarter plate and a magnificently hand-engraved balance cock, requiring countless hours of effort prior to completion.

Emil Lange
Emil Lange was the second son of Adolph Lange, the founder of the manufacture. He took control of A. Lange & Söhne with his brother Richard in 1875 and later on his own in 1887, leading the company for more than 40 years. Emil Lange brought the manufacture to the highest international honors and recognition. A patriarch, he perpetuated the tradition established by Adolph Lange to contribute to and support the development of young talented watchmakers in Glashütte. Widely respected, Emil Lange also presided over the celebrated German Horological Academy (DUS) of Glashütte.