J L Reuter/Lecoultre

• jewelled chromed perpetual movement wound by changes in barometric pressure, rotating pendulum with timing screws • silvered chapter ring, Arabic numerals, moon hands • rectangular chrome frame with bevelled glass, inclined base, hinged doors to the front and back • movement signed J L Reutter S.G.D.G

The movement is running at the time of cataloguing, however it may benefit from a service. The chapter ring has an aged patina consistent with its age. There are some scuffs to the chrome case and tarnishing. The bevelled glass is chipped to the corner of the left hand side panel. Movement numbered 4205, bellows numbered to the back 6209.
"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."

In the late 1920s Jean-Leon Reutter dreamt of inventing a perpetual motion timepiece which consumed the smallest amount of power possible to keep the clock running. His device used a metal cylinder, known as the bellows, which contained a glass tube similar to a thermometer that reacted to the changes in temperature and atmospheric conditions. The result was an ingenious clock like no other that could run independently and continuously.

For a similar example see Cologni, F., Jaeger-LeCoultre La Grande Maison, p.215