A. LANGE & SÖHNE | RICHARD LANGE PERPETUAL CALENDAR TERRALUNA, REFERENCE LSLS1803AB A WHITE GOLD PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, POWER RESERVE AND LEAP YEAR INDICATION, CIRCA 2017

Dial: silvered Calibre: cal. L096.1 mechanical, 80 jewels Case: 18k white gold, sapphire crystal display back secured by 4 screws Case number: 224'976Closure: black A. Lange & Söhne alligator strap and 18k white gold folding clasp Size: 45.5 mm diameter Signed: case, dial and movementAccessories: A. Lange & Söhne Guarantee Seal, setting pin, instruction manual and presentation box

The movement is in working condition at the time of cataloguing. All functions are working properly. The watch is in almost like new condition. Please note that the movement has not been tested for the accuracy of time and may need a service at the buyer's expense. Sotheby's does not guarantee the future working of the movement and we do not guarantee the authenticity of any individual component parts since subsequent repairs and restoration work may have resulted in the replacement of original parts. You are advised that watch straps or bands made of materials derived from endangered or otherwise protected species (i.e. alligator or crocodile) are not sold with the watch and we reserve the right to remove these straps or bands prior to shipping. Furthermore, the watch may not come with its original manufacturers strap or band. Prospective bidders should review the Conditions of Business, Authenticity Guarantee, the Guide for Prospective Buyers, and any Important Notice in the sale catalogue.
"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."

Lange & Söhne debuted the Richard Lange Perpetual Calendar Terraluna at SIHH 2014. Crafted in a massive 45.5 mm case, the watch provides the complication of a perpetual calendar, 14 days power reserve and a back display of an oversized moon-phase on a rotating orbit. The technical prowess of the watch is enhanced by the beautiful aesthetics of the regulator dial, where the firm gives visual priority of the most useful information for the wearer. The largest register on the dial showcases the minutes track with the twin aperture for the date. Interlaced below, the seconds and hours register contain the apertures for day and month respectively.  

The reverse of the watch has a crescent shaped window to view the caliber L096.1, however, the star of the back is the large moon-phase display. In the center lies a representation of the earth which rotates every 24 hours, giving the reader a world-time complication. Stars and a moon orbits the earth, making a full rotation every lunar month. The movement is incorporated into this scene, as the balance wheel represents the sun. Completing the movement is the constant force escapement, visible just above the balance wheel.