Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940
Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940

Patek Philippe Yellow Gold First Series Perpetual Calendar Watch Ref. 3940

Sale Save
Color Silver
Size 36mm
Material 18k YG
Contact us

Brand: Patek Philippe
Model: Perpetual Calendar
Reference: 3940
Year: 1987
Material: 18k YG
Dial Color: Silver
Dimensions: 36mm
Watch Movement: Self-Winding
Bracelet/Strap: Grey
Box/Paper: Archive Paper
Condition: Excellent
SKU: 133951
The Patek Philippe Perpetual Calendar 3940 was released in 1986 and set a high bar for modern perpetual calendars. Rumor has it, the 3940 was the watch of choice for Patek patriarch Philippe Stern. The 3940 features an automatic, micro-rotor powered calibre 240-Q movement and a very wearable 34mm case. The first series of 3940s, which were released in 1986, feature what is now referred to as a first series dial. The watch offered here is a first series 3940 with a solid gold caseback and was sold in August of 1987. The watch is in excellent condition, likely never polished and very well kept. This watch comes with an extract from the archives of Patek Philippe.

Please feel free to get in touch with any questions. The best way is to email us at hello@thekeystone.com or text/call (213) 632-9061

If you are interested in selling or trading your watch, please include as much information as possible, as well as photos. You may also email photos to hello@thekeystone.com 

When a watch is purchased, our watchmaker will perform a thorough inspection of the movement and perform a number of tests to ensure the watch is functioning in top condition before shipping. This process can take 7-10 business days. 

Once your watch is ready, watches shipped within the United States are sent via insured FedEx Overnight and will arrive the next day. We will send over tracking information once the watch ships. 

International shipping can take a number of days considering customs and travel. Straps made from exotic materials banned for import will be removed from the watch prior to shipping.

We know it can be difficult be completely certainly that a watch's condition, size or shape is what you are looking for. 

We provide a 5 day inspection period from delivery so that you may receive the watch and decide if it is right for you. 

This is not a trial period; our watches are well documented and any wear or damage will be deducted from the return amount. 

At The Keystone, we accept payment via Credit Card, Bank Transfer and major Cryptocurrency Coins. Please reach out via email with any questions about payment to Hello@thekeystone.com

Free returns

We offer a 5 Day Inspection Period and Free Returns

Worldwide shipping

Ship anywhere in the World. 

Contact Us

Reach out with any questions: Hello@TheKeystone.com