A. Lange & Söhne

• cal. L0001.1 manual winding nickel  lever  movement, 40  jewels,  mono-metallic  balance,  swan-neck  regulator,  hand-engraved  balance  cock,  two  column  wheels • matte  black  dial,  applied  white  gold  Roman  and  faceted  baton  indexes,  luminescent  hands,  power  reserve  indication,  subsidiary  dials  for  constant  seconds  and  30-minute  register,  white  gold  chronograph  and  yellow  gold  split  seconds  hands • platinum brushed and polished case, sapphire  crystal  display  back  secured  by  six  screws • case,  dial  and movement signed • with a platinum  A. Lange  &  Söhne folding clasp

Please note that the movement has not been checked for timekeeping accuracy and Sotheby's will not be held responsible for any repairs should they be require. Movement working at the time of cataloguing and functions are operating. Dial and hands in excellent condition. Case and buckle are in very good condition, very very gently polished still with few light scuffs. Beautiful piece with a very complete set and at a conservative estimate. **The strap of this wristwatch is made from an endangered species; please refer to important notices for further information.**
"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.

Important Notice regarding importation into the United States of Rolex watches
Sotheby's cannot arrange for the delivery of Rolex watches to the United States because U.S. laws restricts the import of Rolex watches. The buyer or a designated agent may collect the property in the country of sale."

A truly sophisticated timepiece, the present example is the world's first flyback chronograph with a double rattrapante mechanism, with 465 hand-finished parts within the 43 mm platinum case.  Outstanding from other split seconds chronograph wristwatches, this watch features a counter allowing users to measure and compare time intervals of up to 30 minutes, as opposed to a maximum of only 60 seconds, as is customary with conventional chronographs.