Dial: black ribbedCaliber: cal. E23 SC quartz movement, 7 jewelsMovement number: 1550154Case: 18k yellow gold, solid case back secured by four screws to the bandCase number: 2815840Closure: 18k yellow gold Patek Philippe Nautilus bracelet with folding claspSize: diameter 32 mm, bracelet circumference approximately 152 mmSigned: case, dial and movementAccessories: Patek Philippe Certificate of Origin and Extract from the Archives confirming the date of sale on November 9th, 1984, two booklets and one bi fold

CASE Case in overall excellent condition with light wear and faint surface scuffs from occasional use. Bezel and case bands with some very light wear. The bracelet is with equivalent light wear. Some light patina throughout. DIAL Dial in excellent condition. MOVEMENT The crown disengages from the case and will require service at the purchaser's discretion.
"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."

The Ref. 3900 was in production for a few years from about 1984 to 1989 with a wide range of dial and case variations. To the best of our knowledge more than half of the Ref. 3900 watches were produced in stainless steel, making the present model in yellow gold particularly rare.