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Leonidas Two-Register Chronograph, c. 1950s

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Leonidas (maker)
Date
c. 1950s
Country of origin
Unrecorded in source
Object type
Wristwatch
Stock no.
Product 8539622593
Credit line
Dealer listing, Analog/Shift (product 8539622593)
Catalogue title (original)
Leonidas Two-Register Chronograph (English)

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Record summary

Catalogued by Analog/Shift (dealer), New York (stock number Product 8539622593), this is a wristwatch by Leonidas, dated c. 1950s. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) 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 — Analog/Shift

The world of horology, with its deep connections, can be likened to a vast, impenetrable forest, entwined at the branches and at the roots. Brands that, from the names at least, don't seem to be connected, often are, through acquisition or familial connections. Take Zenith and Movado , for example, or Tudor and Rolex , or Wittnauer and Longines . So collectors are starting to get creative, going for less familiar names that are still connected to the ones we know and love. At the time Heuer was producing the Carrera, the company merged with an old, respectable house that itself was purchased by a well-known name in horology. That house is none other than Leonidas. Leonidas was founded in 1841 in St. Imier, Switzerland, and was purchased by Constant Jeanneret-Droz in 1914. Constant Jeanneret-Droz, in turn, was the son of Jules Frédéric Jeanneret, founder of renowned chronograph èbauche maker Excelsior Park . With an already-strong background in producing chronographs, Leonidas continued to produce chronographs and complicated wristwatches throughout the 20th century, supplying watches to the militaries of the Central and Axis powers during the two World Wars. This particular chronograph dates from roughly the 1950s, shortly before the merger with Heuer. With its over-sized dial and telephone register at 3 o'clock, it has much in common with this example from Zenith . However, while the Zenith is pink gold, the case of this Leonidas is steel and relatively thick, with sharp lugs. But touches like the pink gold hour markers and handset give it a decidedly softer look, at home on a fine leather strap, making it a clear choice for a suit watch.

Historical context

Modern Mechanical Horology (1945 – 1969)

Tool watches for divers, pilots and astronauts; electric watches anticipate the electronic age.

The classic era of the mechanical wristwatch: dive watches, chronographs for motor racing and space flight, GMT watches for jet travel, slim dress watches, automatic calendars, and the rise of Japanese manufacturers alongside Swiss, American, German and Soviet industries.

Read the period in the timelineMore wristwatches from this periodEarlier: Golden Age of Mechanical Watchmaking

Atlas type guide

Chronographs and split-seconds watches

A chronograph is a watch with an additional seconds hand that can be started, stopped and returned to zero independently of the timekeeping. Louis Moinet built an early example in 1816 and Nicolas Rieussec a recording 'chronographe' in 1821; Adolphe Nicole's heart-shaped reset cam (patented 1862) made the modern return-to-zero possible. Split-seconds (rattrapante) chronographs add a second hand that can be stopped for intermediate times; flyback chronographs restart instantly.

Chronographs were essential tools for doctors (pulsometer scales), artillery (telemeter), engineers and sport. In wristwatches, Valjoux, Venus, Lemania and later the automatic chronographs of 1969 (Zenith El Primero, the Chronomatic Calibre 11 group and Seiko 6139) are milestones.

What to look for

  • Push-pieces on the case band or a single button in the crown (monopusher).
  • Subsidiary registers for minutes and hours; tachymeter, telemeter or pulsometer scales.
  • Column wheel versus cam control visible in the movement.
  • Calibre markings of specialist makers (Valjoux, Lemania, Venus, Landeron).

Dating clues

  • Pocket chronographs with heart cam reset: after 1862.
  • Wrist chronographs: from c. 1910; two-button designs from the 1930s.
  • Automatic chronographs: from 1969.

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:Flyback chronographChronograph

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