
Wristwatches · Wristwatch
Longines Comet Mystery Dial, Model 8475, Calibre 702, circa 1970
- Maker / attribution
- Longines (maker)
- Date
- c. 1970
- Historical period
- Quartz Revolution (1969 – 1990)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Stock no.
- VWS3242
- Credit line
- Dealer listing, Vintage Watch Specialist (VWS3242)
- Catalogue title (original)
- Longines Comet Mystery Dial - Model 8475 - Calibre 702 - c.1970 (English)
View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction
Record summary
Catalogued by Vintage Watch Specialist (dealer), United Kingdom (stock number VWS3242), this is a wristwatch by Longines, made in Switzerland, dated c. 1970. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Wristwatches collection. The record is illustrated with 6 photographs.
Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.
Catalogue description
Dealer description — Vintage Watch Specialist
A Super Retro Longines Comet with an Eye-Catching Mid-Blue Mystery Dial in Superb Condition, a Very Striking Watch, c.1970 The Longines Comet watch, introduced in the early 1970s, is a striking example of mid-century modern design and innovation. Renowned for its distinctive aesthetic, the Comet features an eye-catching dial with two rotating disks—one for hours and one for minutes—resembling a comet's trail across the sky. This unique time-telling method set it apart from traditional analog watches. Longines, a Swiss luxury watchmaker established in 1832, was already celebrated for precision and elegance. The Comet emerged during an era when watchmakers were experimenting with futuristic designs to captivate a new generation of consumers. Its avant-garde style reflected the bold spirit of the time while maintaining Longines' hallmark craftsmanship. Though it was produced for a limited period, the Longines Comet remains highly sought after by collectors today. Its innovative design and historical significance make it not just a timepiece but also a piece of horological art that captures an era of exploration and creativity in watchmaking history What's on Offer Well you can certainly see the free-spirited 1970s in this watch - with a likeness to the Omega Dynamics of the same era, this watch smashes retro cool out of the park - just look at that dial which is in fact known as a 'mystery dial' because it has two rotating discs – the hour disc to the centre is mounted with a broad luminescent arrow-form pointer which indicates the hours on a chapter ring; minutes are shown via the circular ‘comet’ mounted on the slim blue outer disc which points to the minutes calibrated at the dial’s edge, so it is not immediately apparent to the viewer how the hours and minutes advance. The dial is very reminiscent of the Lambretta logo minus the red, and I absolutely love it. The round dial encapsulated within the brushed steel, rounded-off TV case makes for an eye-catching piece with bags of charisma, this is almost too cool to sell! But alas, we have to! The watch is paired with a stainless bracelet and looks superb on the wrist with its robust proportions. In such nice condition, we don't expect this watch to stick around, blink and you'll miss it!
Historical context
Quartz Revolution (1969 – 1990)
Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.
Quartz and digital watches transformed the market after 1969. Swiss employment collapsed, Japanese and Hong Kong production soared, and the Swatch (1983) helped the Swiss industry recover; mechanical watches survived as luxury goods.
Read the period in the timelineMore wristwatches from this periodEarlier: Modern Mechanical Horology
Atlas type guide
Wristwatches
Bracelet watches were worn by women from the early nineteenth century — Breguet made one for Caroline Murat, Queen of Naples, in 1810–12 — but the wristwatch only became a man's instrument with military use and aviation in the early twentieth century. Between the World Wars it overtook the pocket watch; the 1920s and 1930s brought rectangular Art Deco cases, water-resistant cases and the first automatic winding systems.
After 1945 the wristwatch became a carrier of identity — dress watches, sports and dive watches, chronographs, calendars — produced by Swiss, American, Japanese, German, Soviet and Chinese industries. The quartz revolution after 1969 and the mechanical renaissance since the 1990s, including the rise of independent watchmakers, complete the story.
What to look for
- The reference number (between the lugs or inside the case back) and serial number, the starting point for dating.
- The calibre: its maker and number are often stamped under the dial or on the bridge.
- Originality of dial, hands and crown — refinished ('redial') dials are common.
- Case material marks: 18K/750, 14K/585, stainless steel, gold-filled, plated.
Dating clues
- Wire-lug cases: before c. 1925.
- Water-resistant screw-down cases: from 1926.
- Quartz movements: from 1969; sapphire crystals widespread after c. 1980.
General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.
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