• cal. 27-70 manual winding lever movement, stamped with the seal of Geneva, 24 jewels, Gyromax balance • black dial, applied yellow gold Arabic numerals, Feuille hands, subsidiary dials for constant seconds, and 30 minute register, outer gilt tachometer scale, outermost gilt minute track • 18k yellow gold case, stepped bezel and lugs, rectangular chronograph pushers, screw down sapphire crystal display back • case, dial, and movement signed 

CASE Case with wear, scuffing and scratches consistent with some regular use. Bezel with a linear pattern of two nicks between 7 and 8. Bezel also with surface scratches throughout. The interior bezel between 1 and 2 with an indentation visible at an angle under the crystal. A small indentation to the stepped bezel next to the upper right lug between 1 and 2. Impressions of the hallmarks to lug bands still apparent. PPC stamp to back of lug very crisp. Step to lugs with wear. Upper left lug with a dent to the back side. Left side case band with a flat indentation at the center closest to the case back. **Please note that a 18k yellow gold Patek Philippe folding clasp is available, but in damaged condition without the calatrava clasp. The clasp would not be operational without repair. A standard stainless steel display buckle may be provided for display and exhibition purposes. DIAL Dial is very attractive and in excellent condition. MOVEMENT The movement is running at time of cataloging, however it was not tested for the accuracy of time or duration of the power reserve and may need service at the buyer's discretion. Please note that Sotheby's does not guarantee the future working of the movement. ***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.***
"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 Extract from the Archives confirming the date of sale on September 21, 1999, with black dial and applied Arabic numerals.  Patek Philippe introduced the Reference 5070 in 1998 after nearly 30 years of hiatus from the production of chronograph wristwatches by the firm, and were an instant success. In fact, the last chronograph model produced prior to the 5070 was the Reference 1463, production of which ceased in the late 1960s. For an example of Reference 1463, please see lot 322.

The calibre 27 70 157 is widely recognized as one of the best chronograph movements and is based on a Nouvelle Lemania ébauche specially developed for Patek Philippe. The movement was only used in the 5070 and 5071 references (the white gold diamond-set version of the 5070).

Production of the present model ceased in 2010 with the introduction of the reference 5170.