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Below you’ll find the answers to all questions. Don’t forget to read the detailed explanations in order to become a total Watch Savant!
1. Which of the following watches did A. Lange & Söhne NOT release in 1994?
Tourbillon “Pour le Mérite”
Explanation: While the other three watches were among the original models released by A. Lange & Söhne in 1994, the Zeitwerk was not launched until 2009.
Genta at one point even established his own watch brand, which today has been absorbed into Bulgari, for which he designed the Bulgari Bulgari model. A selection of Genta’s most notable creations can be found in this article. Even though there is a bit of confusion about its origins among watch lovers, the Vacheron Constantin Overseas was actually designed by Jorg Hysek, who also worked at brands like Rolex and Breguet before founding his own watch brand in 1999.
5. Which of these was one of the first automatic chronograph movements, released in 1969?
ETA Valjoux 7750
Zenith El Primero
Released in 1969 as one of the first automatic chronograph movements was the El Primero caliber from Zenith, which prior to its release had spent seven years in research and development. In the run for the title of the first fully integrated automatic Swiss chronograph movement to reach the market, Zenith beat Seiko’s Caliber 6139 and the former Chronomatic Group’s Caliber 11. In this article from 2015, we take a look at the movement and the watches it has powered. If you’re looking for a more recent read about the movement that made Zenith famous, we recommend our review of the Zenith Chronomaster El Primero Full Open.
The Lemania 5100 began manufacture around 1974. It’s no longer made today. The Lemania company was brought by Breguet which itself is part of the Swatch Group. Caliber B01 is an in-house chronograph movement from Breitling, released in May 2009 after five years of development. The movement incorporates a column-wheel switching mechanism and a vertical clutch, two hallmarks of a well-made chronograph. The ETA-Valjoux 7750, while not part of that original group from 1969, might be the world’s most common chronograph movement and powers many of the world’s most popular Swiss watches. You can read more about its history and development in this Watchtime E-Special.
6. With what watch invention is Jean-Marc Wiederrecht most closely associated?
Three golden bridges movement
Explanation: Jean-Marc Wiederrecht is most closely associated with the retrograde display. Together with his wife Catherine Wiederrecht, the watchmaker founded the Swiss watchmaking company Agenhor. The company supplies movements and movement modules to an array of brands including Fabergé, Hermès, Harry Winston, MB&F, Romain Jerome, Arnold & Son, and Van Cleef & Arpels.
The lever escapement was invented by the English watchmaker Thomas Mudge. The automatic winding system goes back to Swiss watchmaker Abraham-Louis Perrelet. When Fortis introduced the first wristwatch with automatic winding in 1926, the mechanism was modeled on the one that Perrelet designed. Constant Girard, a co-founder of Girard-Perregaux, was the watchmaker who invented the three golden bridges movement. The Tourbillon with three golden bridges is known as that watchmaker’s most famous watch and is still produced by Girard-Perregaux.
7. When do perpetual calendars need to be reset and why?
Never, they’re called “perpetual” for a reason.
Every four years, as they don’t know leap-years.
Not until 2100, which is not a leap-year despite being divisible by four.
It’s always exactly 100 years after the first day of usage.
Explanation: Perpetual calendars are notable because, unlike simpler types of calendar watches, they “know” whether or not it’s a leap year – until 2100. All details about how perpetual calendars work can be found in the WatchTime Watchmaking Glossary.
An annual calendar, on the other hand, doesn’t “know” how many days February has and therefore needs to be adjusted. Read all details in this article. There is no calendar watch that needs to be reset exactly 100 years after the first day of its usage and no mechanical watch that never needs to be reset. When you’ve learned all about calendar watches, you can test your knowledge in this quiz.
8. Some watch brands have their own proprietary materials. Which of these is NOT one of them?
Explanation: The popularity of unusual materials in the watch world has been increasing in recent years – and what material could be more exceptional than one a brand can develop for itself and own? Many brands are making their own material.Popular examples include Hublot’s Magic Gold and Hublonium; the Swatch Group’s Sedna Gold; Ulysse Nardin’s Diamonsil; Rolex’s Rolesium and Breitling’s Breitlight. The latter material is, according to the brand’s website, 3.3 times lighter than titanium and 5.8 times lighter than steel.
Several brands who created their own metals can be found in this article. Among those is A. Lange & Söhne, which produces a proprietary alloy called “Honey Gold” (rather than the fictional “Langarium”). According to CEO Wilhelm Schmidt, Honey Gold is only used in small quantities and for special pieces.
9. What is the defining feature of a doppelchronograph?
Two elapsed-time counters
A split-seconds feature
A center-mounted minutes counter
Separate escapements for the chrono function and the regular time
Explanation: A doppelchronograph is also called a rattrapante or split-seconds chronograph. It is a special kind of chronograph with two hands, thus allowing the wearer to time multiple simultaneous events. The French word “rattrapante” means “to catch again” and describes the attempt of the seconds hand to catch up with the “normal” chronograph hand, after being used to stop a time period in between.
10. With what watch invention is Abraham-Louis Breguet most closely associated?
Explanation: Abraham-Louis Breguet is most closely associated with the invention of the tourbillon. The tourbillon is a cage that rotates around its own axis and encloses balance and escapement. The device’s intention is to compensate timing errors caused by the effects of gravity, a property further explained in our Watchmaking Glossary.
Watchmaker Abraham-Louis Breguet is also known for the invention of the world’s most famous watch, the Breguet 160, a watch famously owned by Marie Antoinette. The story of the timepiece and Breguet’s early life is further explained in the book “Marie Antoinette’s Watch“, which we reviewed in this article.The watch brand Breguet founded is today a part of the Swatch Group.
The inclined tourbillon, however, is a more modern invention attributed to Stephen Forsey and Robert Greubel of the Swiss luxury brand Greubel Forsey. More about this piece and other Greubel Forsey milestones are addressed in our article on the brand’s 10th anniversary in 2014. The watchmaker most commonly associated with the mainspring is Peter Henlein, a German locksmith and clockmaker. The oscillating pinion was invented by Edouard Heuer, known as the founder of Swiss watch brand TAG Heuer, now part of the LVMH group.