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Vintage circa 1938 Longines Tonneau Watch, Cal. 10L, 15 Jewels, 10K Gold Filled Case, Running — view 1 of 4
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Wristwatches · Wristwatch

Vintage circa 1938 Longines Tonneau Watch, Cal. 10L, 15 Jewels, 10K Gold Filled Case, Running

DocumentedDocumented from an auction catalogue; attribution as stated by the auction house.
Maker / attribution
Longines (maker)
Date
c. 1938
Country of origin
Switzerland
Object type
Wristwatch
Lot
Item 237645698
Credit line
Auction lot record: lot 440, EXCLUSIVE WATCHES AND POCKET WATCHES 13, Sphere Auctions LLC (2026), via LiveAuctioneers
Catalogue title (original)
Vintage Circa 1938 Longines Tonneau Watch, Cal. 10L, 15 Jewels, 10K Gold Filled Case, Running (English)

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Record summary

Catalogued by LiveAuctioneers auction archive (lot Item 237645698), this is a wristwatch by Longines, made in Switzerland, dated c. 1938. The Atlas places it in the Golden Age of Mechanical Watchmaking period (1900 – 1945) of its Wristwatches collection. The record is illustrated with 4 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

Lot description — Sphere Auctions LLC

This is a vintage Longines Art Deco tonneau (barrel-shaped) wristwatch. The dial is signed "Longines" with gold Arabic numerals, a small seconds subdial with 60-minute style scale, and gold hands. The case back is stamped "Cased and Timed in U.S.A. by Longines, Keystone, J. Boss, 10K Gold Filled" with case serial number 997399X. The movement is signed "Longines Watch Co. Swiss, Fifteen 15 Jewels," serial number 5815412, caliber marked "10L" — a Longines form movement made for tonneau and rectangular cases of this era. Based on Longines' published movement serial number production records, the watch dates to approximately 1938. The case measures approximately 25mm in width (excluding crown) as measured with digital calipers. The watch is fitted with a leather strap. The watch is running.Please see photos for full condition details.This watch is sold as described above; please review all photos carefully as they form part of the description.

Historical context

Golden Age of Mechanical Watchmaking (1900 – 1945)

The wristwatch displaces the pocket watch; waterproof cases, self-winding and grand complications.

The wristwatch overtook the pocket watch. Military use in the First World War, aviation, water-resistant cases (1926), automatic winding (1923–31), rectangular Art Deco designs and early chronographs and calendars defined the period.

Read the period in the timelineMore wristwatches from this periodEarlier: Industrial Revolution

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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