Girard-Perregaux 1966 Perpetual Calendar 40mm Men’s Watch (90535-53-131-BK6A): Review


9.8 Price
9.9 Design
10 Power Source
10 Functionality
9.9 Overall Quality

Founded in 1791, Girard-Perregaux is a Swiss luxury watch manufacturer. This high-end haute horlogerie company is headquartered in La Chaux-de-Fonds, Switzerland, is a well-respected maker of fine timepieces and is desired worldwide.

The 1966 Perpetual Calendar collection is one that honors the 1966 design by Girard-Perregaux while incorporating modern technology, mechanics, and materials.

Brand: Girard-Perregaux
Type: 1966 Perpetual Calendar, 40mm, Men’s Watch

Model: 90535-53-131-BK6A
Purchase Link:


Measuring in at 40mm in diameter, this 1966 Perpetual Calendar model by Girard-Perregaux is perfectly sized for a luxury watch. Not too large and not too small, this men’s timepiece is made from 18kt White Gold, with matching materials on the bezel, crown, and hour and minute hands. Highly polished, this White Gold offers a luxury look, feel, and construction.

Featuring four subdials, which we will review in detail below, this timepiece offers additional complications that are powered by the in-house automatic movement. Complete with a black alligator or crocodile leather strap and tang buckle, this watch is a classic that still gives wearers an ever-modern look while retaining Swiss manufacturing and sophistication.

Below is a complete list of technical specifications and features of the 1966 Series Girard-Perregaux Perpetual Calendar timepiece.

Technical Specifications and Features:

  • Case Size: 40mm
  • Case Shape: Round
  • Movement: Automatic
  • Swiss Made
  • Engine: Girard Perregaux Calibre GP033Q0
  • Power Reserve: 48 hours
  • Jewels: 26
  • Case Material: 18kt White Gold, Polished
  • Case Thickness: 10.74mm
  • Case Back: Presentation / Transparent
  • Crystal: Scratch Resistant Sapphire
  • Dial Type: Analog
  • Dial Color: Silver
  • Bezel: Fixed 18kt White Gold
  • Dial Hands: White Gold “Leaf Shaped” Hour and Minute Hands, Polished
  • Calendar-Related Dial Hands: Blued Steel
  • Second Markers: Minute Markers Around Outer Rim
  • Subdials: (4) Month, Day, Date, and Moon Phase Aperture
  • Crown: Push/Pull
  • Dial Markers: Index
  • Band Type: Strap
  • Band Material: Alligator/Crocodile Leather
  • Band Color: Black
  • Clasp: Tang Buckle
  • Calendar: Perpetual Calendar
  • Functions: Hour, Minute, Second, Perpetual Calendar, Moon Phase, Leap Year Indicator
  • Features: 18kt White Gold, Leather, Month, Moon Phase, Perpetual, Automatic Movement, Sapphire
  • Water Resistance: 30 meters / 100 feet

Power Source

This 1966 18kt White Gold 40mm timepiece utilizes an automatic movement to power its numerous complications. This automatic movement uses an in-house Girard-Perregaux calibre GP033Q0 engine, which will give you 48 hours of power reserve when you are not wearing this watch.

The Girard-Perregaux calibre GP033Q0 contains 26 jewels and beats at 28,800 v.p.h.

The Good

Protected by the finest scratch resistant Sapphire crystal, this luxury watch has a case diameter of 40mm and is constructed of 18kt White Gold with a polished finished. The dial is silver in color and retains that classic GP Perpetual Calendar design.

There are four beautiful subdials that give this timepiece a stunning look and functionality. All of the calendar-related subdial hands are blued steel, while the remaining dial hands are silver-toned.

The day of the week subdial is located at the 9 o’clock position; the date subdial is located at 3 o’clock; the month (outer perimeter indicator) and the leap year indicator (center of the subdial indications) are both located beneath the 12 o’clock position. Finally, the moon phase aperture is located above the 6 o’clock position.

The hour markings are stick indexes, with a double index at 12 o’clock. On the back of the 18kt White Gold case is a presentation / exhibition window that allows you to view the automatic movement within. Overall, the display of this timepiece is simple, elegant, and allows you to read the time and all complications with superior ease.

The Bad

There is one negative of this watch worth mentioning — the water resistance is only 30 meters (100 feet). For a luxury watch worth five figures, it would make owners feel better if the water resistance rating were at a minimum of 50 meters (164 feet). You will have to be careful with this watch around water. Rain and washing your hands will not affect the timepiece, but do not swim, take a bath, or submerge this watch in water for any long period of time if you can avoid it.


From a functionality standpoint, this Girard-Perregaux timepiece is on par with Swiss excellence in horology. With the best of materials put into the construction of this piece, the mechanics are just as worthy. Within the 10.74 mm thick White Gold case is a  Swiss made automatic movement which utilizes calibre GP033Q0 engine made in-house by GP.

The four subdials offer a wonderful complement to the traditional timepiece abilities of this watch — with a month, date, date, and moon phase aperture surrounding the central point of the silver dial, this watch has all you need to tell the time and more, including taking into account leap years.

The scratch resistant Sapphire crystal is not only luxurious but will keep the front of the watch from getting scratched.

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The Highlights

The main highlight of this timepiece is the design. As a part of the 1966 Perpetual Calendar collection, this watch is intended to embody and honor the classic Swiss design from the year 1966, with some modern mechanical improvements and superior materials to make it a fine luxury piece.

The multiple complications are very desireable in a watch such as this one — especially when these subdials show the more unusual complications such as calendar-specific ones in addition to the classic moon phase aperture.

The 18kt White Gold is used throughout the design and is polished to provide an elegant finish. The hour and minute hands are made of 18kt White Gold and are displayed in a beautiful leaf shape. The polished gold complements the polished white gold of the main 40mm case and bezel.

The steel blued calendar subdial hands are what makes this design special. Everyone loves a beautiful watch with blued hands — and this timepiece gives you that subtle design by choosing to blue the subdial hands while keeping the main dial hands White Gold. This is a sophisticated way of incorporating a truly modern design in with a classic Girard-Perregaux watch.


This Girard-Perregaux model retails for $55,700.00. You can find and purchase this watch, brand new and unworn, for much less than this price, however. If you are seeking to add to your collection, this GP 1966 automatic would be an excellent addition.

You can find it at for $23,5500.00.

PrestigeTime Purchase Link:

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