• Cal. 315 S IRM QA LU (SI) automatic movement, stamped with the seal of Geneva, 36 jewels, silicon escape wheel • silvered dial, applied black Arabic numerals and baton indexes with luminescent dots, luminescent Feuille hands, center seconds, subsidiary dials for day and month, fan form aperture for moon phases, aperture for date at 6, power reserve indicator at 12, outer minute track • 18k white gold case, sapphire crystal display back with magnified aperture • case, dial, and movement signed • with an 18k white gold Patek Philippe folding clasp

Please note the lot is now unsealed. Additionally, the lot remains in excellent like new condition. ***Please be advised that the bands on this watch are made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) and thus not sold with the watch, they are for display purposes only. We will remove these bands prior to international shipping.*** For further details, please contact the department directly.
"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."

Accompanied by a Patek Philippe Certificate of Origin and Extract from the Archives confirming the date of sale on December 20th, 2005.  Together with Advanced Research Patek Philippe presentation box, box cloth and outer packaging. The Ref. 5250 was launched in 2005 in a limited series of only 100 examples in white gold.

For more information on Patek Philippe's Advanced Research division, please see lot 91.

Please note that the present lot is being offered in its original factory seal. Because the strap must be removed in order for the watch to be shipped out of the United States, the factory seal will need to be broken. Buyers should be aware that breaking the seal may cause the lot to decrease in value.