• cal. 240 automatic nickel lever movement stamped with the PP seal, 25 jewels, Oscillomax balance, gold micro rotor • silvered brushed dial, applied baton numerals, 3 apertures for leap year indication with month, day with 24-hour indication and date with moon-phases • platinum case, snap-on sapphire crystal display back • case, dial and movement signed • with a platinum Patek Philippe folding buckle

Automatic movement and perpetual calendar in working order when cataloging. Dial is in excellent condition, nice and clean. Case with only a few very light surface hairlines near the lugs and around the bezel. Buckle with light wear. Overall in very good condition. Please note the movement has not been tested for time keeping and a service might be required at the buyer's expense. **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."

With a Patek Philippe Certificate of Origin, instruction manual and presentation box.

Lauꦇnched in Basel Fair in 2011, Ref. 5550P was the finale chapter of a series of limited edition Advanced Research wristwatches equipped with silicon components. The number of limited edition collections by Patek Philippe is comparatively scarce as they are only launched by the brand to mark special moments in history, making this particularly example, which is fresh to the market all the more preciouꦆs.

As a successor of the preceding Ref 5250, 5350 and 5450, all annular calendar models, this model debuted as an upgrade version in all aspects including functionality and reliability. Representing the brand's years of painstaking efforts and researches, this timepiece is a perpetual calendar wristwatch equipped with multiple patented parts including Spiromax® bala💮nce spring, Pulsomax® escapement and GyromaxSi® balance. The trio is incorporated into Oscillomax® system, which is engraved on the movement revealed through sapphire crystal display back. Silicon-made components generate less friction and thus less air resistance, resulting in smoother running gears. The accuracy, lifespan, and efficiency of the movement are then improved.

Ref. 5550P epitomizes the tireless dedicati꧙on of Patek Philippe to create timepieces that are technologically advanced while adhering to tradition. Limited to a mere 300 pieces, this is undoubtedly a connoisseur's piece that belongs to the most discerning collection.