Longines Comet 'Mystery Dial'

The late 1960s were an extraordinary moment in watch design. Traditional rules were beginning to loosen, cases were becoming more sculptural, colors more adventurous, and designers were increasingly willing to reconsider something as fundamental as how a watch should display the time.

The Longines Comet is a wonderfully strange product of that experimentation.

Dating to circa late 60s, this Reference 8475 features a 35mm stainless steel cushion case surrounding one of the most distinctive displays Longines ever produced. Rather than conventional centrally mounted hands, the Comet uses rotating discs to create its unusual “mystery” effect. An arrow-shaped hour indicator travels around the inner hour track, while a small luminous “comet” circles the outer track to indicate the minutes. The mechanism effectively disguises the traditional relationship between hands and pinion, leaving the indicators seemingly floating across the dial.

And what a dial it is. Concentric fields of teal blue and white give the watch an almost Space Age, instrument-panel quality, punctuated by Arabic numerals at the cardinal positions and crisp hash marks around the perimeter. The broad gold-tone hour arrow and tiny comet-like minute marker add another layer of visual eccentricity. It is unmistakably a late-1960s design, already anticipating the more radical shapes and colors that would define the following decade.

The watch retains its signed acrylic crystal and signed crown and is powered by the manually wound Longines Calibre 702. It comes fitted to a coordinating blue alligator leather strap with a matching stainless steel pin buckle.

More than half a century later, the Comet still feels genuinely unconventional. At a time when much of contemporary watchmaking looks backward for inspiration, the Reference 8475 is a reminder of an era when Longines was perfectly happy to imagine what a wristwatch might look like next.

Founded in 1832 in Saint-Imier, Switzerland, Longines was at the forefront of watchmaking during the early days of modern horology. Constantly innovating, the company devised some of the most important wristwatches of the 20th century. Indeed, by 1919, Longines was the official supplier of timepieces for the International Aeronautical Federation, working to develop highly accurate navigation chronometers for many of the era's great aviation pioneers.

Most famous among Longines' forays into navigation pieces is the Lindbergh Hour Angle watch, a wristwatch designed by famed aviator Charles Lindbergh in conjunction with the brand to allow aviators to calculate, with the help of a sextant and a known latitude, their exact geographic location.

From the 1930s to the 1950s, Longines also released a series of stunning time-only watches. Often referred to as “Calatravas” after the iconic Patek Philippe model, most of these watches had thin stainless steel cases measuring 32-35mm, standard sizes for the time. Like the Patek Philippe Calatrava, these timepieces were known for their perfect proportions and elegant simplicity.

But it wasn’t just time-only watches that drew clients' attention worldwide — particularly in the Americas: The company’s caliber 13ZN, first released in 1936, is widely regarded as one of the finest chronograph movements ever devised by any brand. This development would form the basis for work in sports timing, in which Longines developed timepieces with flyback functionality and 1/100th-second counters.

Today, Longines produces a remarkable number of watches annually — over 1.5 million of them — and rakes in over $1B in annual revenue through the sale of everything from simple quartz watches to sophisticated moon phases and chronographs. Incredibly, they produced their 51 millionth timepiece in 2019, and in some ways, it feels like the brand is just getting started.

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