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Alfred Helwig's 1920 tourbillon variant with no upper bridge; the entire cage is visible.
Breguet's 1801 rotating-cage escapement, explained.
Monochrome
Celebrating the 180th anniversary of François Czapek’s Genevan watch enterprise and the 10th anniversary of the rebirth of the brand, Czapek releases the fourth and final chapter in its round of celebratory watches. Following the anniversary Antarctique Tourbillon, the Antarctique Plique-à-Jour and the Time Jumper, the last member of the quartet is the Quai des […]
SJX Watches
The 30th anniversary of the Chopard L.U.C. manufacture was one anniversary among many this year, but it will likely be remembered thanks to the Grand Strike, the most complicated watch in Chopard’s history and its first grande sonnerie. Building on the successful Full Strike minute repeater architecture and making full use of the brand’s patented sapphire gongs, the Grand Strike is a chronometer-certified two-train clock watch with a push-button minute repeater. In this context, the presence of the tourbillon is almost a footnote. Initial thoughts I can count on one hand the number of brands that have created their own grande sonnerie wristwatch. It’s one of the few things in watchmaking that’s proven challenging enough to still be rare, even in the days of computer-aided design (CAD) and advanced manufacturing technology like wire erosion. For this reason, the grande sonnerie has a towering cultural presence among watchmakers and collectors, looming above all other complications. For Chopard, the Grand Strike represents the culmination of 30 years of the L.U.C. manufacture, the brand’s haute horlogerie division. The first impression of the Grand Strike is one of extraordinary depth. There’s not much of a dial, save for the minutes scale etched on the inside of the sapphire crystal, and the small concentric sub-dials for the dual power reserve displays. This depth shrinks the watch visually, and it feels dense and compact despite its rather large 43 mm size and...
SJX Watches
Pocket watches were the main driver of value at Sotheby’s New York auction that just concluded today. The four most valuable lots of the sale were three pocket watches and one clock, totalling over US$16 million with fees. Notably, all four were accrued by the late Robert M. Olmsted over more than six decades, along with numerous other pocket watches in the sale. In all the Olmsted Collection brought over US$20 million, underling the late Olmsted’s discerning eye. The top lot was the most complicated watch ever made by Audemars Piguet, dubbed “Grosse Pièce” for its size. The oversized watch set a record for the brand, selling for just over US$7.7 million including fees. It seemed a rising tide lifted all boats as many other pocket watches in the sale, including those from brands with little cachet today, blew past their high estimates. The big results included a 1930s school watch with a flying tourbillon by German watchmaker Heinz Eberhard that sold for US$355,600 and an oversized tourbillon clockwatch by Charles Frodsham that sold for US$1.12 million. Interestingly, many of these pocket watches went to the same paddle. Patek Philippe The “Grosse Pièce” wasn’t the first timepiece in the sale to clear seven figures. That distinction went to lot 32, a previously unknown Patek Philippe paperweight desk clock made for Thomas Emery, which sold for US$2.73 million. It is one of only three known Patek Philippe desk clocks of this type, with the other two – made...
Monochrome
François-Paul Journe, a talented watchmaker and the founder of the brand F.P. Journe, is mostly known for his Tourbillon Remontoire d’Egalité – it was his first watch – and his take on the resonance phenomenon. We can also mention the Octa, his automatic watch introduced in 2001, and, of course, the fantastic Chronomètre Bleu. But […]
Worn & Wound
As if winning the top prize at the GPHG were not enough, Breguet has capped off their big 250th anniversary year with the launch of what is surely their most horologically interesting and cutting edge release in years. The Expérimentale 1 is an ambitious foray into contemporary haute horlogerie from a brand that more than most is associated with classicism. It incorporates and merges multiple technologies and advancements into a remarkably cohesive idea that might even have those of us who have always bristled at the controversial Marine collection rethinking its potential. The showstopping feature of the new Expérimentale 1 is the tourbillon, the first ever to beat at 10 Hz. Bregust is quick to remind us that most tourbillons run at a rate of 2.5 Hz, so this represents a dramatic increase and in theory should provide a variety of chronometric benefits, including rate stability over the duration of the power reserve and a better baseline level of accuracy. But it’s not just a high frequency tourbillon. Breguet has also developed and introduced a new magnetic escapement that is designed to provide constant force to the balance. The logic here is fairly straightforward even if the mechanics themselves are, frankly, somewhat difficult wrap your arms around without real watchmaking experience (this, by the way, is essentially my constant of being as I observe similar watchmaking advancements – wide eyed and impressed but quite frequently confused by all the math and ph...
Fratello
Breguet continues to surprise us in its 250th year. In the spirit of the brand’s name-giver, it now presents a world first. Breguet has utilized magnets to create the first 10Hz tourbillon with a magnetic escapement, which delivers constant force to the balance, and has incorporated it into the Expérimentale 1. This fast-beating tourbillon in […] Visit Breaking News: Breguet Creates The First Contact-Free Escapement By Using Magnets to read the full article.
SJX Watches
Along with the flagship Classique Grande Sonnerie Métiers d’Art 1905 pocket watch, Breguet just announced its first water-resistant minute repeater, the Classique Répétition Minutes 7365. While this 250th anniversary edition with a Breguet gold case and Bleu de France grand feu enamel dial is limited to 25 examples, it likely represents the future of the brand’s chiming watches: smaller and more robust. Initial Thoughts Despite the strong popularity chiming watches have seen at the high end for many years, it has felt like something of a weak point for Breguet, reliant on rather old movements that didn’t always sound the best. The ambitious and wild Tradition Répétition Minutes Tourbillon 7087 promised to fix this in 2018, but for unknown reasons that watch never made it to market. However, acoustically Breguet’s repeaters have become quite good despite the old bones, proving how key gongs and case construction are to repeaters. The 7087 doubles down on this approach, not even introducing a silent centrifugal governor which has become ubiquitous in modern chiming watches, even at the high end – the sound of which I’ve come to find quaint. The move to smaller sizes, 42 mm to 39 might be more dictated by market trends rather than any specific vision from the brand, but is one I appreciate either way, and while water resistance isn’t strictly necessary in a chiming watch, the peace of mind is reassuring. In the end, this watch comes down to how much you lik...
SJX Watches
The penultimate entry in Breguet’s 250th celebration is the Classique Grande Sonnerie Métiers d’Art 1905, a complicated pocket watch that unites several of Breguet’s creations, along with the métiers d’art know-how and high-technology of the modern Breguet manufacture. The 1905 features hand engraving and flinqué enamel, as well as using Breguet’s magnetic strike governor and gold gongs. As with all of the brand’s 250th anniversary creations, the nearly 60 mm case is made of Breguet Gold, with Bleu de France for an additional pop of colour. Initial thoughts During the 2000s, Breguet launched the Montre de Poche 1907, a minute repeating tourbillon pocket clock watch with grande et petite sonnerie. At the time, several of the best brands were building new complicated pocket watches, most notably Patek Philippe, rather than scavenging ebauches. In the 20 years since, new production complicated pocket watches have disappeared from nearly every brand’s catalogue – except for Breguet’s. The Montre de poche 1907BA/12. Image – Breguet Officially the 1907 has only been offered in yellow gold – though white and rose gold examples probably exist as well. Now, to celebrate 250 years of the house of Breguet, the 1907 gets a new look and technical overhaul with the striking Classique Grande Sonnerie Métiers d’Art 1905 in an 18k “Breguet Gold” case. The 1905 is not completely novel, mechanically speaking, as none of Breguet’s launches this year have been...
SJX Watches
Blancpain has just unveiled its most complex modern-day watch, the Grande Double Sonnerie, to mark its 190th anniversary. This CHF1.7 million grand complication signals Blancpain’s return to the highest tier of haute horlogerie. One of the most technically ambitious chiming wristwatches ever made, the Grande Double Sonnerie incorporates traditional complications: grande and petite sonnerie, minute repeater, flying tourbillon, and retrograde perpetual calendar, but also offers an unexpected twist with two distinct chiming melodies, a Westminster chime plus a a bespoke sequence composed for Blancpain by Eric Singer of rock band Kiss. Initial thoughts It has been some time since Blancpain unveiled a truly headline-grabbing complication. The manufacture made its name in this arena with the 1735 of 1991, but in the decades since, its output has leaned toward more conventional high-end offerings - perpetual calendars, tourbillons, carrousels, and chiming watches - while its commercial momentum has come largely from the Fifty Fathoms and Villeret triple calendar. The unexpected Grande Double Sonnerie is therefore a reminder of what Blancpain can do at the very top level of watchmaking. The Le Brassus-based manufacture tends to be overlooked when speaking of high horology today, but the Grande Double Sonnerie should remind enthusiasts how sure-footed Blancpain is in this regard. Even before considering the many complexities of the timepiece, the watch impresses from the fir...
Monochrome
The De Bethune Kind of Two concept, a pivoting, double-faced case that literally gives you two watches in one, has proven to be one of the brand´s most successful design experiments. The 2021 DB Kind of Two Tourbillon and the 2022 DB Kind of Two Jumping GMT established the format as both an engineering exercise […]
Teddy Baldassarre
Watch hands are more important to a timepiece's design than you might think. A watch can have the most beautiful dial in the world but it isn't really a watch unless it tells you the time. And while the wide world of watches does offer some intriguing exceptions to the classical analog style that's been established for centuries, the vast majority of timepieces still adheres to that formula: two main hands, one for the hour, one for the minute, sometimes joined by a third for the seconds, pointing to the time on a numbered ring. All watch hands do essentially the same jobs, so one might assume that little thought and creativity goes into designing and crafting such a utilitarian element of horology. One would be mistaken, however, since watchmakers over the years have created numerous hand types, each of which imparts its own distinctive character to a watch's overall aesthetic. Here is a rundown of a dozen of the most significant styles used on watches today, and a little about where each came from and how it got its name. [toc-section heading="Breguet Hands"] Designed by Abraham-Louis Breguet, founder of the eponymous luxury watch maison and inventor of numerous horological devices including the tourbillon, Breguet hands made their first appearance on a watch in 1783, Traditionally crafted in blued steel, they are recognizable for their slim shafts and “hollow moons” near the tips. An indicator of classically elegant design, and often paired with Roman numerals, or...
SJX Watches
Girard-Perregaux (GP) unveils the second chapter of the Laureato’s 50th anniversary with the Laureato Three Gold Bridges Tourbillon. First launched as part of the earlier generation Laureato in the 1990s, the tourbillon has been reimagined with a monochromatic palette in a limited edition of 50 pieces that evokes GP’s golden age as a modern-day manufacture. Initial thoughts Few tourbillon movements are as iconic as the GP Three Gold Bridges. The concept debuted in a tourbillon pocket watch in 1867 and the manufacture has since adopted the signature arrow-shaped bridge as its logo and even employed the motif in movements without a tourbillon. Fortunately, the new Laureato is very much a tourbillon; this combination of two icons should please both fans of the brand and enthusiasts alike. The GP9620 tourbillon movement is good example of high-quality, in-house watchmaking, and is evidently constructed and finished to a high standard. Derived from the GP9400 series of movements, the GP9620 features improved finishing and a new monochromatic palette. Remaining true to the original three bridges design, the proprietary calibre retains the visual identity of early GP pocket watch tourbillon movements, including the brand’s iconic tourbillon cage immortalised as its own design by Reinhard Meis in his book Das Tourbillon; very few brands have a tourbillon they can truly call their own. But the movement also incorporates modern amenities like automatic winding – thanks...
SJX Watches
Matching sets are a motif of Phillips’ upcoming Hong Kong auction, with the most spectacular being the Concord Saratoga Splendour, a set of four minute repeating, high jewellery wristwatches representing the four precious stones – diamond, sapphire, ruby and emerald – each with a distinct movement made by Christophe Claret. Also on offer is a set of three watches from Glashütte Original with Meissen porcelain dials, and a Patek Philippe Pagoda quartet. Lot 857, a matching pair of Bovets depicting Hong Kong harbour by day and by night. Image – Phillips Such sets enjoyed popularity at the top end of the market during the 1980s and 1990s, often centred around the four precious coloured stones, diamonds, emeralds, rubies, and sapphires. Perhaps the ultimate example of the matched set is the most complicated Patek Philippe watch, the Calibre 89, that was originally launched as a set of four in yellow, rose, and white gold, and platinum. Unfortunately, many of these sets have since been split up. Can these three escape that fate? Lots 858 to 862 – Concord Saratoga Splendour Set Concord was one of a few brands that saw great, but ephemeral, success during the 1980s and 1990s, in the same vein as Gerald Genta, Ebel, and Corum. In 1995 Concord launched the Saratoga Exor, a minute repeating tourbillon with perpetual calendar and bimetallic thermometer, set with 15.85 carats of baguette diamonds. With a price tag of CHF2 million, it was probably the second most expensive w...
Monochrome
On the occasion of Dubai Watch Week 2025, Chopard unveils the L.U.C Grand Strike, the brand’s most complex watch to date, with a Grande Sonnerie, a Petite Sonnerie, a Minute Repeater and a tourbillon regulator. Just like the brand’s Full Strike minute repeater, its acoustic merits are nothing short of extraordinary, in particular thanks to […]
Monochrome
The collaboration between the indie brand Louis Erard and the master watchmaker Konstantin Chaykin has already given birth to several limited-edition watches based on the Time Eater concept – such as this tourbillon with regulator display. As Dubai Watch Week 2025 open its doors tomorrow, we get a different concept, yet still inspired by Chaykin’s […]
Monochrome
The latest watch in the Horological Machine series by MB&F;, the HM11 is a true architectural experiment, but for the wrist: a quatrefoil case composed of four functional rooms surrounding a central atrium that hosts a flying tourbillon. Introduced in 2023 as the HM11 Architect, the concept combined an immediately tactile user ritual with an […]
Worn & Wound
Singaporean independent brand Zelos is known for their colorful and texture-forward dials that strike a nice balance between affordability and unique design. Each new creation seems to drive their overall image forward in eclectic ways that keep the brand from fitting too rigidly into any one box. While Zelos is often associated with their sub $1,000 tool watches, they have made spectacular forays into the space of haute complications and uncommon materials in recent years. Their release of the Mirage in 2020, a watch that featured a tourbillon at a competitive $11,000 pricepoint, and their work using tantalum as a case material, is proof that the brand is committed to stretching the imagination regarding what a microbrand is capable of. Their newest release, the Comet 39, joins the ranks of the recent trend of stone dials we’ve seen permeating the hobby in the past few years. Since the trend is fairly new, my experience with stone dials is limited, and I was looking forward to getting hands-on with this piece. I was lucky to be able to pick up this review watch in-person at the Windup Watch Fair in New York City a few weeks ago while I was visiting. Complementary sizing by David Lane Design at Windup allowed me to wear the watch around the city during my trip and get a sense for how it moved with me during high-volume days. The Mother of Pearl (MOP) edition is one in a series of three Comet watches in the brand’s new Comet 39 line, all of which are crafted with vari...
SJX Watches
A window into the early days of contemporary independent watchmaking, the upcoming Phillips Hong Kong auction offers an unexpectedly diverse line-up, including a single-owner collection of 1990s watches. The indie selection ranges from Daniel Roth in the late 1980s to Philippe Dufour’s influential finissage. And the historically-minded enthusiast will also notice the catalog includes work from an era when star independent watchmakers, such as Louis Cottier, counted brands as their clients. Lot 982 – Daniel Roth Ref. 2187 Tourbillon “Double Face” After helping establish Breguet as a Swiss watchmaker, Daniel Roth established his eponymous brand in 1988 with his inaugural model being the ref. C187/2187, a tourbillon wristwatch with two faces. The front indicates the time and showcases the tourbillon at six o’clock, while the reverse is home to the date and power reserve indicator. Despite the strikingly exotic look for the time – remember this was the late 1980s – the tourbillon actually employs the familiar Lemania tourbillon calibre, unsurprising given that Mr Roth helped with the construction of the calibre while he was at Breguet. While the bones are Lemania, the aesthetic is uniquely Daniel Roth. The grey dial has a pinstripe guilloche while the three-armed seconds hand indicates the time on a three-layer scale. Just last year, Louis Vuitton resurrected the Daniel Roth marque with a new generation of the iconic tourbillon powered by an all-new calibre deve...
SJX Watches
The upcoming Phillips Hong Kong auction includes a diverse and spectacular selection of pocket watches spanning two centuries. From early 19th‑century enamel masterpieces crafted for the Chinese market to 20th‑century tourbillon chronometers that triumphed at observatory trials, the lots on offer demonstrate the technical and aesthetic evolution of the watch over the last two hundred years. Lot 1086 – S. Smith and Son No. 1899-1 Tourbillon Chronometer with Kew Class A Certificate Albert Pellaton-Favre constructed the first of two tourbillons in the auction, which was later retailed by S. Smith & Son. The other, by Patek Philippe, is the work of his son, Jämes-César Pellaton. Both are depicted in Reinhard Meis’s famous Das Tourbillon. The English and Swiss disagreed on what constitutes a chronometer. The English argued that a chronometer must use a chronometer (detent) escapement, while the Swiss considered any watch a chronometer if performed well enough – which the English would call a “Half-Chronometer”. As the Willis enamel dial boasts, the first is a chronometer by both English and Swiss reckoning, with a spring detent escapement and “Especially Good” certificate from the Kew Observatory. While S. Smith and Son retailed quite a number of tourbillons, including others with detent escapements, most were sourced locally, while the present lot uses a Swiss movement. The London branch of Baume Frères ordered six tourbillon chronometers from Albert Pella...
Monochrome
For many years, you’ve probably known Roger Dubuis for its bold, angular watches with openworked movements and tourbillon(s), most of them under the Excalibur collection. And while most are technically very impressive, this isn’t exactly the style that Mister Dubuis defined when he created the brand in the mid-1990s. The earliest watches, known as the […]
SJX Watches
The just-concluded Geneva auction season was mostly a plateau with several striking peaks and a few lows. The peaks were marked by desirable timepieces that outperformed by far, yet shared little in common with one another in terms of style or period. The peaks ranged from multiple F.P. Journe watches to a diamond-set Patek Philippe ref. 3424/1 “Gilbert Albert” to the Breguet four-minute tourbillon pocket watch from 1809 to the Instagram-ready Patek Philippe ref. 3970 in “salmon” with Breguet numerals. Despite such diverse taste, the small pool of bidders seemed to have one thing in common: they were all focused on a “trophy” watch. The Christie’s saleroom in the Four Seasons. Image – Christie’s With few exceptions, contemporary watches from mainstream brands were cold, while vintage watches were mostly lukewarm – but as always there were exceptions. An Patek Philippe ref. 570 with a black dial signed “E. Gubelin” sold for an impressive CHF419,100 including fees, or US$523,000, at Christie’s, while Phillips sold a Rolex Daytona ref. 6263 “RCO” (or “Oyster Sotto”) for an equally impressive CHF1.39 million, or US$1.73 million – close to the historical peak for the model. A vintage watch that surprised on the downside was the 1927 Rolex Oyster worn by Mercedes Gleitze when she became the first woman to swim the English Channel in 1927 – a landmark in Rolex lore. Though it sold for CHF1.39 million, or US$1.74 million, there was just one bi...
SJX Watches
Philips’ upcoming sale in Geneva from November 8-9 includes two timepieces owned by John Pierpont Morgan Jr., widely known as Jack Morgan. Heir to a financial empire, Morgan was the first chairman of what is now JPMorganChase, and more pertinently, inherited the sensibilities of his father, J. Pierpont Morgan Sr., in collecting and gifting. Morgan Sr. was a collector on a grand scale, and across categories. The catalogues of his collections spanned volumes – two books for Chinese porcelain, four for miniatures, and a single volume for his watches and clocks, albeit a 350-page tome that weighed almost 6 kg in its original edition. The penchant for collecting was passed on to Jack Morgan, who evidently had sharp tastes in watches and clocks. The two timepieces going on the block at Phillips illustrate that. One is the first-ever Cartier mystery clock, a Model A sold to Morgan in 1913. And the other is one example of the “Morgan caliper”, a series of minute repeating, split-second chronograph, tourbillon pocket watches made for J.P. Morgan & Co., which were gifted by Morgan Sr. and Jack Morgan to the firm’s partners and important associates. Titans of finance In 1913, Louisiana senator Arsène Pujo formed the Pujo Committee to investigate the growing concentration of financial power in the United States. The committee found that an inner circle of partners at J.P. Morgan & Co. and its two largest proxies held 341 directorship positions across the boards of 34 majo...
Fratello
Let me ask you a simple question: if you had to choose between a tourbillon and a Gravity Control System, which would you pick? Well, then again, you might require more information before answering my question since the system I mentioned might not be a household name. Therefore, let me introduce the gravity-defying Zenith Defy […] Visit Introducing: The Gravity-Defying Zenith Defy Zero G Sapphire - 46mm Of Transparent Or Blue Sapphire Goodness to read the full article.
SJX Watches
Breguet’s 250th anniversary got off to a good start and the momentum continues with the Classique 7225, another take on one of the brand’s most inventive movements. Guaranteed to run within an impressive one second a day, the Classique 7225 contains the cal. 74SC that boasts a high-frequency balance wheel running at an uncommonly rapid 10 Hz, or 72,000 beats per hour. To achieve that without overwhelming friction, the balance pivot is magnetic, allowing it to “float” as it oscillates. The 10 Hz balance was launched some 15 years ago, but its predecessor, the Classique 7727, did not enjoy particularly attractive aesthetics. The Classique 7225 solves the problem with a striking dial modelled on an important series of tourbillon pocket watches from the early 19th century. To accommodate the dial layout, the cal. 74SC incorporates an additional constant seconds that can be instantaneously reset. Notably, the 7225 is not a limited edition, unlike its compatriot, the Classique 7235 launched at the same time. Initial thoughts The 7225 shows that Breguet’s revival is certainly well underway, stewarded by Gregory Kissling, who has been in the top job for slightly over a year. The 7225 isn’t a major revamp of the 7727, but it is far, far more appealing watch. The magnetic-pivot movement was ingenious at launch, and still is, but the 7727 was under-designed and over-logo’ed. With the 7225, Breguet’s ultra-chronometer finally has visual and tactile appeal. And it keeps...
Monochrome
Czapek unveils the second special series created to celebrate the 10th anniversary of the brand’s rebirth in 2015. Following the Antarctique Tourbillon introduced in April, this new release presents an exceptional interpretation of the maison’s integrated-bracelet sports watch, distinguished by a plique-à-jour enamel dial. Plique-à-jour is an intricate and delicate enamelling technique distinguished by its […]
Monochrome
The Carrera Extreme Sport series by TAG Heuer returns for 2025 with three new references: a travel-ready Twin-Time chronograph that merges a true GMT into the openworked Extreme Sport template; a rose-gold chronograph that disrupts the collection’s tool aesthetic using precious metal; and a Tourbillon Extreme Sport F1 75th Anniversary limited edition that celebrates seven-and-a-half […]
Time+Tide
The 2025 Carrera Extreme Sport collection sees TAG Heuer introduce chronograph, GMT, and tourbillon novelties.The post TAG Heuer tributes 75 years of Formula 1 with a triple Carrera Extreme threat appeared first on Time+Tide Watches.
Hodinkee
The New Montblanc Star Legacy Suspended Exo Tourbillon Château de Versailles Limited Edition celebrates the famous French castle with a unique Swiss timepiece.
SJX Watches
On episode 12 of the SJX Podcast, SJX shares his hands-on impressions of the Audemars Piguet Royal Oak “Jumbo” Extra-Thin Selfwinding Flying Tourbillon Chronograph RD#5, the fifth and final watch from the brand’s R&D; skunkworks. We also address listener questions about the (great) leadership at Vacheron Constantin, and whether brands like A. Lange & Söhne and Vacheron Constantin can gain market share from independents – why not? Listen on Apple Podcasts, Spotify, and Youtube.
SJX Watches
Audemars Piguet (AP) reinvents the chronograph with the Royal Oak “Jumbo” Extra-Thin Selfwinding Flying Tourbillon Chronograph RD#5. Inside the titanium and palladium BMG case – standing just 8.1 mm high – is the cal. 8100, a new take on the chronograph mechanism that employs spring-loaded racks to gather and store energy. The RD#5 is the fifth and final instalment in the “RD” series of watches that underline the impressive technical know-how of AP, particularly its Le Locle manufacture that evolved from Renaud & Papi (APRP). Conceived with the goal of creating a chronograph that is extra slim and easy on the fingers, the RD#5 boasts exceptionally light and comfortable pusher feel, an instantaneously-jumping minutes counter, and an exceptionally slim profile (thanks in part to peripheral winding), all while remaining amenable to industrial-haute horlogerie manufacturing. It’s one of the most technically interesting debuts of 2025, and we explain AP’s new take on the chronograph in detail below. The cal. 8100 with its unorthodox chronograph and peripheral rotor Initial thoughts Outwardly just another Royal Oak, with the same ideal proportions and class-leading bracelet as the iconic “Jumbo”, the RD#5 is actually one of the most innovative mechanical chronographs in recent years. Perhaps the only comparison for out-of-the-box chronograph construction is AgenGraphe that was unveiled almost a decade ago. The watch was evidently developed with two goals in ...
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