Wristwatches · Wristwatch
Zenith XL-Tronic Quartz, Gold Plated Calendar Watch, Model 20-0040-510, circa 1970s
- Maker / attribution
- Zenith (maker)
- Date
- c. 1970s
- Historical period
- Quartz Revolution (1969 – 1990)
- Country of origin
- Switzerland
- Object type
- Wristwatch
- Materials / technique
- gold
- Dimensions
- Case 40 mm
- Stock no.
- VWS3301
- Credit line
- Dealer listing, Vintage Watch Specialist (VWS3301)
- Catalogue title (original)
- Zenith - XL-Tronic Quartz - Gold Plated Calendar Watch - Model 20-0040-510 - c.1970s (English)
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Record summary
Catalogued by Vintage Watch Specialist (dealer), United Kingdom (stock number VWS3301), this is a wristwatch by Zenith, made in Switzerland, dated c. 1970s. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Wristwatches collection. Materials and techniques recorded by the source: gold. Recorded dimensions: Case 40 mm. 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 Cool and Very Collectable 'Solar Eclipse' Zenith XL-Tronic with a Quartz Movement and Gold Capped Case, c.1970s The Zenith XL-Tronic watch, introduced in the early 1970s, marks a significant chapter in horological history. As quartz technology emerged, Zenith sought to merge traditional watchmaking craftsmanship with cutting-edge innovation. The XL-Tronic series was one of the brand's first ventures into electronic watches. What's on Offer Who says Quartz ain't cool? This is the epitome of cool! Just look at that stunning radial gradient dial, it looks like a solar eclipse! The applied dial furniture comprises chunky baton hour markers with luminous inserts and stick hands with luminous inserts. A subtle date aperture between 4 and 5 o'clock and the dial is completed with the Zenith signature and applied emblem. The extra large (40mm) unusually shaped case is gold capped with a brushed texture, the gold brings out the warmth of the dial and gives the watch an opulent aesthetic. The watch has a real style and presence on the wrist and will almost certainly inspire admiring glances, the Zenith XL-Tronic remains a collector’s item today - an unusual and rare timepiece, a real statement!
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
Quartz, digital and electronic watches
Electronic watches arrived in three steps. The Hamilton Electric 500 (1957) was the first battery-powered wristwatch, still with a balance; Bulova's Accutron (1960) used a tuning fork. On 25 December 1969 Seiko released the Astron 35SQ, the first quartz wristwatch, closely followed by the Swiss Beta 21 group. In 1972 Hamilton's Pulsar introduced the LED digital watch, and LCD displays soon made digital watches cheap.
The 'Quartz Crisis' that followed devastated the Swiss mechanical industry, which lost two-thirds of its workforce between 1970 and 1984 before recovering with the Swatch (1983) and the luxury mechanical revival. Solar, radio-controlled, kinetic and connected smartwatches continue the electronic line.
What to look for
- Battery hatch in the case back and calibre markings with 'Quartz' or a crystal frequency.
- Display technology: LED (red, push-button) versus LCD (always-on).
- Tuning-fork hum and a smoothly sweeping seconds hand on Accutrons.
- Model and reference numbers, often printed on the back.
Dating clues
- Electric balance watches: from 1957.
- Tuning-fork watches: 1960–c. 1977.
- Quartz analogue: from December 1969; LED digital: 1972–c. 1978; LCD from 1973.
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.
Read next:Seiko calibre 35A (Astron)
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