Perpetual Calendar

Ellipse

Grand Complications

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Complications

Aquanaut

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Patek Philippe

Pin buckle

Introduced in 1968, Patek Philippe's Ellipse owes its design to no accident. Indeed, it is based on the golden ratio, considered the “divine proportion” found in nature as well as in the greatest works of architecture and art.

This particularly rare version of the Ellipse is made of **steel**, an alloy rarely used by Patek Philippe for these classic models, and features a bezel with a “Clou de Paris” decorative motif of small pyramid-shaped reliefs. 
Slightly larger than the original model, 28.6mm wide compared to 27mm, it features a date function at 3 o'clock and is equipped with a quartz movement, caliber E 23 SC. 

The dials, made by specialist Singer for Patek Philippe, offer a simple yet striking contrast between the white gold hour-markers and hands and the blue dial with its sunray finish.

Over the course of its production, four different types of dial were used. We have written a full article on this subject, which you can read [here](https://www.41watch.com/en/blog/revue-historique-de-la-patek-philippe-ellipse-n178).

Our example is fitted with an MK2 dial, recognizable by its flat hour markers and hands, lettering « Geneve » without the accent as well as the “Sigma σ” symbols visible at 6 o'clock on the dial. The “Sigma σ” symbol, introduced in the 1970s by the Association pour la Promotion Industrielle de l'Or (APRIOR), highlights prestigious manufactures that use precious materials for their watches and indicates that the indexes are solid gold, as is the dial for this model, creating an interesting contrast with the steel case.

This model is also fitted with the famous Ellipse shape buckle, but made of steel to match the case.

The watch comes with its Patek Philippe certificate of origin (dated 1989 in Geneva).

Blue

Hours

Minutes

Date

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Discover this superb Patek Philippe Ellipse 3931 Certificate of origin available at our showroom in Geneva.

Quartz

Certificate of origin

Leather

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Steel

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