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Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Perpetual Calendar
Pre-Owned

Patek Philippe Perpetual Calendar

40930470/AS09927 36 mm
View Specs
Regular price $80,000
Analog:Shift Two-Year Warranty
Watching being review by technician under magnification

Each pre-owned timepiece is back by a two-year mechanical warranty from the date of purchase by Analog:Shift. Prior to sale, every watch is serviced and maintained as needed by our team of expert watchmakers to ensure it is functioning as intended and running within acceptable gain/loss tolerances.

The warranty does not cover damage resulting from accidents, misuse, abuse, unauthorized modifications or repairs, or tampering by third parties. It is non-transferable.

Please keep in mind that these products are vintage and pre-owned, often with decades of history and wear. Exclusions apply.

Analog:Shift Two-Year Warranty

Analog:Shift Two-Year Warranty

Back by a two-year mechanical warranty from the date of purchase
Authorized Luxury Retailer
Rolex green flag outside the Watches of Switzerland store with cream columns and large windows.

Renowned for expertise in luxury watch retail, Watches of Switzerland embodies the highest standards of craftsmanship and service. With a history dating back to the 1700s, the company offers a curated selection of premier timepieces and commits to excellence in customer experience grounded in a legacy of trust and industry proficiency.

Authorized Luxury Retailer

Authorized Luxury Retailer

We are an authorized retailer for over 80 luxury watch brands.
Free Expedited Delivery
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Free Expedited Delivery on Orders $100 and Up (Estimated 1-3 Days)

Our secure shipping service operates Monday through Saturday, from 8:00 a.m. to 6:00 p.m. For security reasons, an adult signature is required for every delivery. Watches of Switzerland does not deliver to P.O. boxes or third-party forwarding services. For more information about delivery, click here. Tracking information will be made available upon shipping.

$15 Flat Fee on Orders Under $100 (Estimated 1 - 2 weeks)

Monday through Saturday, from 8:00 a.m. to 6:00 p.m. For more information about delivery, click here. Tracking information will be made available upon shipping.

If you have any questions or concerns regarding your order, please contact the Watches of Switzerland Client Services

Free Expedited Delivery

Free Expedited Delivery

We offer free, expedited delivery on all orders over $100.
Simple Easy Returns
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Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.

10-Day Returns For Timepieces:

Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.

30-Day Returns For All Other Purchases:

All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.

On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.

All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.

Simple Easy Returns

Simple Easy Returns

Purchase with confidence with our simple, free return policy.

Details

What you’re looking at is arguably one of the most beautiful perpetual calendar watches ever made, full stop. And perhaps one of the most important, too.

The reference 3940 was born in 1985, at a time when the watch world was in the midst of the Quartz Crisis and most brands were churning out inexpensive, battery-powered watches — and struggling to stay afloat. Alas, Patek Philippe was never one to follow the crowd, and released the ref. 3940 perpetual calendar with an in-house, micro-rotor-equipped automatic movement — a gauntlet drop if ever there was one.

Made in several series and different metals, the watch we have here is in fact not a 3940. Housed in a 36mm white gold case, this piece is lugless, and set on a bracelet instead of a strap. Bearing the legendary reference 3945, it features a sapphire crystal, signed crown, a polished bezel, and one hell of a dial: Silver with white gold dauphine hands, it has a combination month/leap year indicator at 3 o’clock; a moon phase/date wheel at 6 o’clock; and a day/24-hour indicator at 9 o’clock. Simple, elegant and refined, it’s a design that was positively revolutionary in the 1980s, and still looks stunning today.

This 3945/1G is powered by the in-house Patek Philippe Calibre 240Q movement with micro rotor, and comes equipped with a beautiful Patek Philippe integrated 18K white gold bracelet with Patek locking clasp.

Exquisite.

If you’ve always appreciated the significance and beauty of the 3940, but desired something with a bit more character and flair (if that’s possible), look no further than the 3945, one of the rarest, and most beautiful references in Patek’s storied historical catalog.

General

Condition

Pre-Owned

Brand

Patek Philippe

Reference

40930470/AS09927

Product Code

40930470

Features

Automatic movement

Case

Case Size

36 mm

Case Shape

Round

Case Material

18Ct White Gold

Bezel Material

18ct White Gold

Crystal

Sapphire

Dial

Dial Color

White

Dial Markers

Dots and Batons

Stone Set

No

Movement

Type

Auto

Bracelet

Type

Bracelet