05/28/2026
This is the 3940 that collectors REALLY want.
The Patek Philippe ref. 3940 Perpetual Calendar is one of the watches that helped bring complicated mechanical watchmaking back to life after the quartz crisis.
When Patek introduced the model in 1985, it completely reset the standard for the modern perpetual calendar: ultra-thin automatic movement, perfectly balanced dial, elegant 36mm case, and absolutely no excess.
But the earliest First Series examples like the yellow gold one seen here are a different breed entirely. Collectors obsess over them for a host of significant details including the sunken subdials and solid caseback.
To many enthusiasts, these early watches represent the purest expression of Philippe Stern’s original vision for the 3940. And they’re genuinely rare.
It’s believed that only around 1,000 First Series examples were produced across ALL metals before Patek transitioned to later series production.
What makes the 3940 so important is that it quietly changed the trajectory of high-end watchmaking. Perfect proportions, restraint, and one of the greatest perpetual calendar layouts ever made.
The deeper you get into watches…the more perfect it starts to feel.