Patek Philippe

• cal. 27-460 M automatic movement stamped with the seal of Geneva, 37 jewels, mono-metallic balance • gilt dial, applied baton indexes, subsidiary seconds, aperture for date • 18k yellow gold case, raised bezel, sapphire crystal top, screw-down case back • case, dial and movement signed • with an 18k yellow gold Patek Philippe buckle

Automatic movement running and date advancing while cataloguing, however it is recommended to get service in the near future. Dial slightly spotted but it is common for its age. Case and buckle with scuffs from normal wear but shows no sign of repolishing, case with good definition and crisp hallmarks. Overall a very good example of this reference, recommended!
"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 Extract from the Archives confirming production in 1977 and sales on October 4th, 1978. 

Ref. 3445, frequently referred to as the 'Monodate', was the first calendar wristwatch produced by the company in series.  It is one of the most popular automatic wristwatches made by Patek Philippe and incorporates the legendary calibre 27-460.  This calibre is known for its efficiency and exceptional quality. To ensure that the watch is continually and smoothly wound when worn, a gold rotor is incorporated. The reason gold is chosen for the rotor is due to its gravity which is almost twice that of lead.

The 3445/100 differs with the addition of the sapphire crystal top, make it a rarer example of this reference.  For an example of Ref. 3445 in white gold, please see lot 2453.