The Grande Lange 1 collection was introduced in 2003 as a larger 41mm diameter version of the original Lange 1 model introduced in 1994 featuring a 38.5mm diameter case. The Lange 1 had nearly perfect proportions and was well-balanced with an offset time display and oversized calendar that was easy to read. In the same year as the launch of the Grande Lange 1, A. Lange & Söhne also released the limited-edition Grande Lange 1 Luna Mundi, their first two watch set.

Each one of these timepieces correctly and accurately indicates the moon’s position as seen from different hemispheres. The white gold model features the Ursa Major constellation on the dial and depicts the phases of the moon as seen in the Northern Hemisphere whereas the pink gold model features the Southern Cross and depicts the phases of the moon in the Southern Hemisphere. The watchmakers and engineers at Lange devised a very accurate system for the indication of the moonphase that moves continuously (as opposed to most common versions found where the moon jumps an increment once or twice a day) and are so accurate that they need to be set once every 122 years.

The present set, number 73 of 101 timepieces, houses the caliber L901.8 in the white gold model with 398 components, while the 18K pink gold watch is fitted with the caliber L 901.7, which requires four more components including an additional wheel to reverse the rotation of the moon disc. The watches are offered for the first time at auction by the original owner, and are complete with their warranty and presentation box.

PROPERTY OF THE ORIGINAL OWNER