Patek Philippe Perpetual Calendar 3940J '2nd series'

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The ref. 3940 is without any doubt the best you can get in simplicity combined with an ultra high-end complication.

In the year 1985, Patek Philippe released a duo of watches with perpetual calendar complications in 36 mm cases. The ref. 3940 housed this unique complication in a beautiful dressy case. The watch was notably worn by Thierry Stern, patriarch of the Stern family that owns Patek Philippe.

This 3940J is housed in a yellow gold case with a matching yellow gold screw down case back. The champagne dial sports 18k yellow-gold pointed baton indexes and elegant 18k yellow-gold dauphine hands. Two apertures at the 12 o’clock position reveal the day and month mechanism.

The complications are displayed on three recessed sub-dials. The sub-dial at the 9 o’clock position indicates the day of the week as well as a 24-hour hand, while the sub-dial at 3 incorporates the month and a leap year indicator. Finally on the lower sub-dial we find a charming moon phase indicator, which is surrounded by a date complication. This specific watch is executed as a very rare, early second series. This early second series is recognizable by the absence of the cross hair in the sub-dial at 3 o’clock and only a handful of those executions reach the market every year.

The watch comes on a deep dark blue, alligator leather, Patek Philippe strap together with a yellow gold buckle, an Extract from the Patek Philippe Archives and recent service papers.


Patek PhilippePatek Philippe has always been a watch brand for the lucky few as they are the creator of the most exclusive timepieces in the world. They made mechanical masterpieces to fit the exquisite gentleman or elegant lady, mainly out of precious metal.



Packages are generally dispatched within 2 days after receipt of payment and are shipped within the Netherlands by Registered Mail through the Dutch carrier PostNL and for other countries by Fedex. Consult us if you prefer another method of shipping. For most destinations tracking is available.