Patek Philippe

• cal. 324/267 automatic nickel lever movement stamped with the seal of Geneva, Silinvar escape wheel and Spiromax hairspring, 36 jewels, 21k gold rotor with zirconium ball-bearings • silvered dial with Arabic numerals and bullet indexes, subsidiary dials for day and month, power reserve sector, apertures for date and moon-phases • screw-down sapphire crystal display back with magnified aperture above the escapement • case, dial and movement signed • 18k pink gold Patek Philippe folding clasp

Overall in very nice condition. The movement is running at the time of cataloguing and the calendar correctors are functioning, however it may require service soon. The dial shows no visible imperfections and the case is in very good condition with only minimal 'shop wear' to speak of.
"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."

With a fitted presentation box and outer packaging.

In 2006, Patek Philippe produced 300 examples of Ref. 5350, the firm's second 'Advanced Research' model. It furthered the innovations of the first model, Ref. 5250, by supplementing the movement with a Spiromax hairspring to the Silinvar escape wheel. This element allows the escapement to achieve isochronous vibration and therefore a higher rate of accuracy. The watch has been fitted with a specially shaped balance cock to allow the Spiromax hairspring and the nearly black silicon escape wheel to be more easily viewed. The 21k gold rotor is fitted with a zirconium ball bearing as is the silicon escape wheel which never needs to be lubricated.

The evolution of the Advanced Research family is a testament to Patek Philippe's unwavering commitment to technological advancements, one of the core values of the firm since the patents awarded to its founders in the 19th century.