• cal. 240 Q automatic lever movement stamped with the seal of Geneva, 27 jewels, Gyromax balance, 22k gold micro-rotor • champagne dial, applied yellow gold baton and dot indexes, dauphine hands, three subsidiary dials indicating day combined with 24 hour display, month combined with leap year indicator, phases of the moon combined with date • 18k yellow gold case, snap on solid case back • case, dial, and movement signed • with an 18k yellow gold Patek Philippe buckle

The movement is running at time of cataloguing, 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. Case and case band in overall excellent condition with very slight dents at 12, 2, between 6-7, and 9. perpetual calendar and moon phases function working properly. Case back engraved "Patek No 770020 Philippe Fabriquée pour le 225 ème anniversaire de Beyer à Zürich 1780 - 1985,". Dial and movement in excellent 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 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 Certificate of Origin and an Extract from the Archives confirming date of sale on July 8th, 1985. Together with four booklets, a leather bi-fold and a presentation box.

Reference 3940 “Beyer” was made to commemorate the 225th anniversary of the renowned Chronometrie Beyer in Zurich (1760 - 1985), the first establishment in Switzerland to specialize exclusively in clocks, watches and jewelry. This special edition watch was produced in a limited quantity of 25 examples. Watches numbers 1 to 15 were fitted with a German calendar, numbers 16 to 25 with the English version. The watches were delivered to Chronometrie Beyer in May 1985.

The first example bearing movement no. 770001 was dedicated to Theodor Beyer on this occasion and is now in the prestigious 'Clock and Watch Museum Beyer Zurich'. It is also illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, p. 294. 
The second example, movement no. 770'002, was sold on 9 July 1985 to watch collector Dr. Eugen Gschwind (1921-1991) in Basle. It is now exhibited in Patek Philippe's Museum in Geneva, exclusively located in a special section reserved for timepieces formerly owned♏ by friends of Mr. Philippe Stern or other significant personalities.