Philippe Stern's Watch

What watch does the former president of Patek Philippe, probably the worlds most prestigious watch brand, wear? Thanks to SJX from PuristSPro Forums, we found out that it is a perpetual calendar Patek Philippe Ref. 3940J. In the end, this is a very logical choice for the president of Patek Philippe. Released in 1985, Patek Philippe the Ref. 3940 was the first highly complicated watch in regular production.

Patek Philippe Ref. 3940J. Picture from European Watch Co.

and is used with their permission. No republication of the same

 should be made without permission from the source.

The Ref. 3940 is amazingly only 9mm thick, which is exceptional when you consider it has an automatic winding movement.

Movement of the Ref. 3940. Picture from European Watch Co.

and is used with their permission. No republication of the same

 should be made without permission from the source.

To keep the watch case slim a mini-rotor is used. Placed in an off center position it allows the movement to be built slimmer.

While the Ref. 3940 is no longer in manufacture, I was able to find one for sale at the European Watch Co. The current production model of the Ref. 3940 is the Ref. 5140.

For those who are wondering, the European Watch Co., did not pay for this post. I have developed a keen interest in vintage watches as of late, and found the site while searching for vintage watches online. I asked them if I could use the pictures on their website, and they graciously agreed. Expect more vintage watch articles in the next few weeks.

About Patek Philippe. Patek Philippe & Co. was founded in Switzerland in 1851. The companies emblem, the Calatrava Cross, was adopted by it at the end of the 19th Century. It is acknowledged as one of the finest, if not the finest, watchmaker in the world.