A. Lange & Söhne

• cals. L901.8 and L901.7 manual winding lever movements, 52 jewels • silvered eccentric dials, applied white gold and pink gold lozenge indexes and Roman numerals, outer minute track, subsidiary seconds combined with phases and ages of the moon, power reserve indication, twin apertures for date • 18k white gold and 18k pink gold cases, sapphire crystal display backs secured by 6 screws • cases, dials and movements signed • with A. Lange & Söhne white gold and pink gold buckles

Movements running at the time of cataloguing, power reserves, dates and moon-phases advancing. The dials and hands in very good condition. Both cases in excellent condition. The watches have not been tested to determine the accuracy of the time keeping. Please note that Sotheby's does not guarantee the future working of the movements and that a service might be required at the buyer's discretion.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. All dimensions in catalogue descriptions are approximate. Condition reports may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. Please note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and leather bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species.NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

**Please be advised that bands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping."

Accompanied by A. Lange & Söhne International Guarantees, setting tools, instruction booklets, travels pouches and presentation case.

After the production at the Lange & Sohne factory ceased for more than 40 years due to World War II, the LANGE 1 was the first watch introduced by the German master watchmaker when the brand was relaunched in 1990. Since its introduction, this model has been one of the most widely acclaimed and iconic pieces presented by the highly revered manufacturer.

The Grand Lange 1 "Luna Mundi" was presented as a set of two watches displaying the accurate waxing and waning of the moon as seen on both sides of the equator. 

The Grand Lange 1 "Ursa Major" model in white gold depicts the moonphases for the Northern Hemisphere while the Grand Lange 1 "Southern Cross" in pink gold displays the moonphases for the Southern Hemisphere. Both moons change phases continuously and not just in sudden increments once or twice a day as in conventional watches. In addition, the mechanism was computed precisely so that the displays deviate from the synodic lunar orbit by only one day in 122.6 years.

These watches were available exclusively in sets of two and the edition was limited to 101 sets, introduced in 2003, they were sold out by 2004.  The current examples are number 33. 

The "Luna Mundi" showcases many iconic and distinctive features including the easy-to-read oversized date apertures and the asymmetric dial display which were used in many of the brand's future creations.  The movement is characteristic of the finest quality production with a double barrel for a power reserve of three days, hand engraved balance cock with swan-neck precision regulator, gold chatons and hand-blued screws.