A. LANGE & SÖHNE | SAX-O-MAT LANGEMATIK PERPETUAL, REF 310.025PLATINUM PERPETUAL CALENDAR WRISTWATCH WITH MOON-PHASES AND 24 HOUR INDICATION CIRCA 2015

Dial: silveredCalibre: cal. L922.1 manual winding, 43 jewelsMovement number: 36'750Case: platinum, sapphire crystal display back secured by 6 screwsCase number: 155'451Closure: A. Lange & Söhne alligator strap and platinum buckle Dimensions: 39 mmSigned: case, dial and movementAccessories: A. Lange & Söhne guarantee, booklet and presentation case

MVT: running at the time of cataloguing. Calendar, moon phases, and 24 hour indication advancing. CASE: in very good condition. Some visible surface scratches to the case band. DIAL: in very good 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."

A Lange & Söhne introduced the Langematik Perpetual in 2004 as the world's first automatic watch with a perpetual calendar and over-sized twin aperture date. This watch elegantly displays the firm's desire to continually push technological advancement with each of their pieces.   The revolutionary Sax-O-Mat movement features a zero-reset seconds hand, which creates a more accurate timepiece. While this was initially used only for the seconds hand in previous models, the Langematik Perpetual employs this function by having a main pusher which can control all of the functions, including the calendar and moon phases, at once. 

As a testament to the accuracy of this piece, unlike many watches displaying moon-phases, which lose a full day in just 2.5 years, the present lot will take 122.6 years to lose a single day.

Complete with a guarantee, booklet and presentation case, the present watch is offered in an excellent overall condition.