Patek Philippe
Patek Philippe Perpetual Calendar 3940 3940J
The Patek Philippe Perpetual Calendar 3940 (reference 3940J) is a 36 mm 18k yellow gold watch with a white dial. It runs on the automatic caliber 240 Q and is water resistant to 30 m. It is no longer in production.
Specifications
Case
- Reference
- 3940J
- Collection
- Grand Complications
- Case size
- 36 mm
- Case material
- 18k yellow gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 30 m
Dial and bezel
- Dial
- White
Movement
- Movement
- Automatic
- Caliber
- 240 Q
- Functions
- Perpetual calendar, Moon phase, Day/night indicator, Leap year indicator, Small seconds
Production
- Production
- Discontinued
Dial versions
This reference was made with these dials and finishes.
3940J White
3940J-025
Painted Roman numerals; black hands
How it compares within the Grand Complications family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 3940J (This watch) | 36 mm | 18k yellow gold | White | 240 Q | — |
| 5204G | 40.2 mm | — | — | CHR 29-535 PS Q | 2021– |
| 5208R | 42 mm | 18k rose gold | Black | R CH 27 PS QI | 2018–2025 |
| 5236P | 41.3 mm | Platinum | — | 31-260 PS QL | 2021– |
| 5270P-001 | 41 mm | Platinum | Salmon | CH 29-535 PS Q | 2018–2021 |
| 5320G-001 | 40 mm | 18k white gold | Cream | 324 S Q | 2017– |
| 5327G | 39 mm | 18k white gold | Blue | 240 Q | 2016– |
| 5327R | 39 mm | 18k rose gold | Ivory | 240 Q | 2016– |
| 5470P-001 | 41 mm | Platinum | Blue | CH 29-535 PS 1/10 | 2022– |
About the Grand Complications family
Grand Complications is Patek Philippe's heading for its most complex watches: perpetual calendars, split-seconds chronographs, minute repeaters, tourbillons and astronomical displays such as the sidereal time and sky charts of the Celestial models. It continues a tradition that goes back to the brand's complicated pocket watches.
References in the catalog include perpetual calendars such as the 5160/500R with an engraved case, the minute repeater perpetual calendar 5374, the Celestial 6104 and the Grandmaster Chime 6300, a reversible watch with grande and petite sonnerie. Production of many of these is very small. For dealers, provenance, the Certificate of Origin, an Extract from the Archives and service by the brand matter more here than anywhere else in the range.
Quick answers
- What size is the Patek Philippe Perpetual Calendar 3940 3940J?
- The Patek Philippe Perpetual Calendar 3940 3940J has a 36 mm case.
- What movement does the Patek Philippe Perpetual Calendar 3940 3940J use?
- It uses the automatic caliber 240 Q.
- How water resistant is the Patek Philippe Perpetual Calendar 3940 3940J?
- It is water resistant to 30 metres.
- Is the Patek Philippe Perpetual Calendar 3940 3940J still in production?
- Discontinued.
- What is the Patek Philippe Perpetual Calendar 3940 3940J made of?
- The case is 18k yellow gold.
Catalog facts checked October 2026.