Patek Philippe, Perpetual Calendar Moon Phase, 2000, 3940R-011, Pink Gold

A landmark in late 20th-century haute horlogerie, the Patek Philippe reference 3940 was introduced in 1985 and quickly became one of the most important perpetual calendar wristwatches of the modern era. At a time when complicated watches were rare, the 3940 redefined the genre with its ultra-thin automatic movement, elegant proportions, and perfectly balanced dial — setting the template for Patek Philippe’s perpetual calendars for decades to come.

The present example is a desirable third-series model from around 2000, housed in a warm pink gold case that enhances its refined, dress-oriented character. Its classic dial displays the perpetual calendar indications with signature clarity and symmetry, powered by the celebrated ultra-thin automatic caliber 240 Q with micro-rotor.

Preserved in excellent condition, this 3940 embodies the timeless elegance and technical significance that have made the reference a cornerstone of serious Patek Philippe collecting.

Key Features

• Reference 3940 | 18k pink gold case

• Third series | Circa 2000

• Perpetual calendar with moon phases

• Ultra-thin automatic caliber 240 Q with micro-rotor

• Classic three-subdial layout

• Elegant and highly wearable proportions

• Preserved in excellent condition

Timeless, discreet, and technically significant, the Patek Philippe 3940 in pink gold stands as a benchmark of perpetual calendar design — a watch that perfectly captures the essence of refined Swiss haute horlogerie.