Patek Philippe Perpetual Calendar Calatrava Ref. 3940J – 18K Yellow Gold – Second Series
Widely regarded as one of the most important perpetual calendars ever produced, the Patek Philippe Ref. 3940J represents the golden age of modern Patek Philippe watchmaking. Elegant, discreet, and technically exceptional, the 3940 is often considered the last perpetual calendar to fully embody the artisanal spirit and refined proportions of traditional Geneva watchmaking before the era of larger contemporary complications.
Presented here is a beautiful second-series example dating to circa 1991–1992, crafted in solid 18k yellow gold and preserved in outstanding condition.
The perfectly balanced dial displays the complete perpetual calendar indications with day, date, month, moonphase, and leap year display. This particular example features the desirable German-language day and month discs, adding further charm and individuality for collectors. The dial remains in perfect condition, showcasing the clarity and elegance that have made the 3940 one of the most admired complicated wristwatches ever created.
At its heart beats the legendary Patek Philippe Calibre 240Q, an ultra-thin automatic perpetual calendar movement powered by a 22k gold micro-rotor. Celebrated for its elegance, reliability, and exceptional finishing, the Calibre 240Q remains one of the most beautiful perpetual calendar movements ever produced.
The sapphire display caseback allows full appreciation of the movement's exquisite architecture and finishing, offering a direct view of one of Patek Philippe's most iconic calibres.
The watch is fitted with a handmade brown leather strap crafted in Belgium and paired with an original Patek Philippe 18k yellow gold deployant buckle, completing a highly desirable and elegant presentation.
An Extract from the Archives has been requested from Patek Philippe and is expected to arrive at the end of August, further enhancing the watch's provenance and collectibility.
Key highlights:
Reference 3940J
Second Series example
Solid 18k yellow gold case
Patek Philippe Cal. 240Q automatic perpetual calendar
Ultra-thin movement with 22k gold micro-rotor
Perpetual calendar with day, date, month, moonphase and leap year indication
German-language day and month discs
Perfect original dial
Sapphire display caseback
Original Patek Philippe signed crown
Sapphire crystal
Original Patek Philippe 18k yellow gold deployant buckle
Handmade Belgian brown leather strap
Extract from the Archives requested from Patek Philippe
Circa 1991–1992
The Ref. 3940 is widely considered one of the greatest perpetual calendars ever made—a masterpiece of restraint, proportion, and mechanical sophistication. Elegant enough for daily wear yet important enough for the most serious collections, it remains a cornerstone reference in the history of Patek Philippe and modern haute horlogerie.
