The Patek Philippe ref. 3940 is widely regarded as one of the brand’s most elegant and technically refined perpetual calendar watches. Introduced in 1985 and produced until 2007, it was crafted exclusively in precious metals and powered by the ultra-thin automatic calibre 240Q, which gives rise to the 9mm thickness of the case. With its relatively small 36mm case and beautifully balanced dial layout, the ref. 3940 embodies a timeless aesthetic that bridges vintage charm and modern sophistication.

Collectors admire ref. 3940 not only for its technical merit but also for its historical significance, as it was the personal choice of Philippe Stern, former president of Patek Philippe. The model was produced in three series across four precious metals: 18K yellow, pink, and white gold, as well as platinum. Today, it remains a grail piece for many enthusiasts, praised for its understated sophistication and enduring value.

The present fresh-to-the-market, yellow gold example dates to 1989 and is offered in excellent overall condition. It is also worth to note that it is a later second-series example, which can be distinguished by the cross divider on the leap year indicator and the Swiss sigma printed below the outer minute track. It is accompanied by its original accessories and further supported by an Extract from the Archives, confirming its authenticity and provenance.