The Geneva Hallmark, established by the canton of Geneva in Switzerland, is a watch standard with strict inspection criteria. Vacheron Constantin is a brand that has produced many watches that have been awarded the Hallmark of Geneva. Let's take a look at their main collections and popular models.

The Hallmark of Geneva: a mark of superior quality
The Hallmark of Geneva is a movement standard given only to a very small number of high-end brands. Let's also take a look at the differences between it and COSC, which is often confused with the Hallmark of Geneva.
The highest standard of Swiss watchmaking

The Hallmark of Geneva is the highest standard for Swiss movements, certifying that the finest finishing has been achieved using traditional techniques. Only watches that pass the inspection stipulated in Article 24 of the Canton of Geneva's Technical Standards Act can be awarded the Hallmark of Geneva.
Previously, the certification criteria were primarily related to the finish of the watch, such as requiring the top surfaces of the screws to be polished or circular-grained, but since 2013, the criteria have also shifted to include the practicality and quality of the watch as a whole.
Only a few luxury brands, such as Vacheron Constantin and Chopard, are awarded the Hallmark of Geneva, and certified watches have the Geneva city emblem engraved on the movement.
Differences from COSC
COSC is a standard that certifies the high precision of movements. It stands for Controle Officiel Suisse des Chronometres (Swiss Official Chronometer Testing Institute), and if a watch passes the official testing laboratory's standards, it is COSC certified.
Like the Hallmark of Geneva, COSC certification has strict standards, and if a watch is certified, it will have great added value.
All current Rolex models are COSC certified, and all Breitling watches, including discontinued models, are COSC certified.
The Vacheron Constantin Collection with Geneva Hallmark Models
Vacheron Constantin is a brand that has released many models that have been awarded the Geneva Hallmark. Let's start by looking at the characteristics of the collections that have these models.
The Overseas: a practical luxury car

Launched in 1996, the Overseas is Vacheron Constantin's luxury sports watch collection and the successor to the Maison's first sports watch, the Ref. 222.
It boasts excellent water resistance, magnetic resistance, and legibility, and is equipped with the specs you'd expect from a sports watch. It also features a distinctive bezel incorporating the Maltese cross design, which represents the brand's pride.
In addition to the metal bracelet, two types of straps are included: leather and rubber, and the interchangeable mechanism makes it easy to change the straps.
Fiftysix: A fusion of classic and modern

Vacheron Constantin's Fiftysix is a relatively new collection, launched in 2018, that combines modern elegance with a friendly atmosphere.
The design of the Fiftysix was inspired by the Maison's 1956 model, the Reference 6073, and the name Fiftysix is derived from the year the Reference 6073 was created.
The dial and crown feature the Maltese cross logo, the Maison's symbol, and the lugs, which are an arrangement of the Maltese cross, are a continuation of the design of the Ref. 6073.
The Patrimony: The Ultimate Dress Watch

"Patrimony" is Vacheron Constantin's proud dress watch line. It was launched in 2004 as a modern interpretation of a 1950s model.
It features a refined and simple appearance with a design that harmonizes tradition and modernity, and the hour and minute hands are set along the curved surface of the dial, creating an elegant look.
Another appealing feature is the wide range of models available, from simple styles to complex models, and the range of sizes available.
Recreating the classics "Traditional"

The Traditionnelle was born in 2007 as a derivative model of the Patrimony, and features classic details such as dauphine hands and railway tracks.
The Traditionnelle is a watch that pays homage to watches from the 1930s to 50s. While the Patrimony reinterprets classics, the Traditionnelle emphasizes classical elements.
Another major feature of the Traditional brand is its lineup of numerous models equipped with complex mechanisms, including perpetual calendars and tourbillons.
Popular Vacheron Constantin models with the Hallmark of Geneva
Vacheron Constantin's flagship collection includes many models that have been awarded the Geneva Hallmark. Let's take a look at the features and appeal of the recommended models.
Overseas Dual Time 7900V/000R-B336

Automatic winding (Cal. 5110 DT). 37 jewels. 28,800 vph. Power reserve approximately 60 hours. 18KPG case (diameter 41mm, thickness 12.8mm). Water resistant to 15 bar. Price: 6,952,000 yen (tax included).
The Overseas Dual Time (Ref. 7900V/110A-B333) is a model equipped with a dual time mechanism that allows two different time zones to be displayed on a single dial.
The in-house automatic movement, Cal. 5110 DT, boasts a power reserve of approximately 60 hours. The time can be adjusted for two time zones by turning the crown in either direction.
The bracelet, leather strap, and rubber strap are interchangeable to suit your taste, and the leather and rubber straps can be swapped without the need for any tools.
Fiftysix Tourbillon 6000E/000R-B488

Automatic movement (Cal. 2160/1). 30 jewels. 18,000 vph. Power reserve approximately 80 hours. 18KPG case (diameter 41mm, thickness 10.94mm). Water resistant to 3 bar. Price upon request.
The first Fiftysix watch to feature a tourbillon is the Ref. 6000E/000R-B488. A tourbillon is a typical complex mechanism that eliminates errors caused by positional differences.
This model also features the Maison's iconic Maltese cross on the tourbillon carriage, crown, and lugs.
The 22K gold peripheral rotor of the Cal. 2160/1 movement, which boasts a power reserve of approximately 80 hours, can be viewed through the transparent case back.
Patrimony Retrograde Day/Date 4000U/000P-H003

Automatic movement (Cal. 2460 R31R7/3). 27 jewels. 28,800 vph. Power reserve approximately 40 hours. Pt case (diameter 42.5 mm, thickness 9.7 mm). Water resistant to 3 bar. Price: 8,888,000 yen (tax included).
The Patrimony Retrograde Day/Date (Ref. 4000U/000P-H003) is a model that takes inspiration from watches of the 1920s and 30s, featuring the Maison's signature platinum 950 case and salmon-toned dial.
The sunburst dial features Patrimony design codes and features the Maison's iconic Maltese cross in relief at 12 o'clock.
The Geneva Hallmark-certified movement, Cal. 2460 R31R7/3, features an openwork 22K gold rotor inspired by the Maltese cross.
Traditional Automatic 87172/000R-9302

Automatic (Cal. 2455/1). 27 jewels. 28,800 vph. Power reserve approximately 40 hours. 18KPG (diameter 38mm, thickness 8.02mm). Water resistant to 3 ATM. Price: 4,334,000 yen (tax included).
The "Traditional Automatic (Ref. 87172/000R-9302)" is a classic model with a case diameter of approximately 38 mm. It has a well-balanced, neat and elegant design.
The case is made of 18K pink gold, and features a railway-shaped minute track on the outer periphery and tapered dauphine hands, giving it a classic beauty.
The transparent case back allows you to see the 22K gold rotor, which is inspired by the shape of a Maltese cross.
Enjoy high-quality watches from top brands
The Hallmark of Geneva is the highest standard for Swiss watchmaking. Only select brands are allowed to bear the seal of the city of Geneva.
Vacheron Constantin is one of the brands that has produced many models that have been awarded the Geneva Hallmark. Pick up a watch that catches your eye and see for yourself why it is so high quality.
Reference site:Vacheron Constantin

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