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The Encyclopedia of Horology

Biel/Bienne, Switzerland

Omega

Verified

Series-produced precision watches, chronographs and observatory-grade movements

History

Growing from a La Chaux-de-Fonds assembly workshop into a large Biel factory, Omega built its reputation on the interchangeable 19-line calibre of 1894, strong observatory trial results, official sports timekeeping and chronographs associated with space flight.

Louis Brandt opened a watch assembly workshop in La Chaux-de-Fonds, Switzerland, in 1848, which later relocated to Biel/Bienne in 1880. The company operated as Louis Brandt & Fils before incorporating the Omega brand in 1894, eventually becoming the Omega Watch Co. in 1903. Following economic challenges during the 20th century, Omega became part of the SSIH group and eventually joined The Swatch Group in 1998. The brand remains a prominent Swiss manufacturer today, maintaining an extensive boutique network and modern production facilities.

The extended history summarises the open references listed under Sources; each statement was checked against the cited passage. Confirm key dates in period documents before relying on them.

Timeline

Omega's recorded dates, dated events from this profile and its sources, and dated pieces and sales from the object catalogue. Dates are as each record gives them.

  1. 1848 · Career

    Louis Brandt opened a watch assembly workshop in La Chaux-de-Fonds, Switzerland, in 1848, which later relocated to Biel/Bienne in 1880.

    Profile text · see Sources

  2. 1894 · Career

    Growing from a La Chaux-de-Fonds assembly workshop into a large Biel factory, Omega built its reputation on the interchangeable 19-line calibre of 1894, strong observatory trial results, official sports timekeeping and chronographs associated with space flight.

    Profile text · see Sources

  3. 1894 · Career

    The company operated as Louis Brandt & Fils before incorporating the Omega brand in 1894, eventually becoming the Omega Watch Co. in 1903.

    Profile text · see Sources

  4. 1894 · Career

    The 1894 Omega calibre with fully interchangeable parts and setting from the crown

    Profile text · see Sources

  5. 1894 · Career

    The Omega 19-line calibre, introduced in 1894, featured a system of total production control that ensured interchangeable parts.

    Profile text · see Sources

  6. circa 1900–1902 · Catalogued piece

    Omega 19-Ligne Open-Face Pocket Watch

    Provenance: Catawiki

  7. 1910 · Catalogued piece

    Omega 18ct gold half-hunting cased pocket watch retailed by Weir & Sons

    Provenance: Bellmans

  8. 1927 · Catalogued piece

    Omega 9ct Yellow Gold Full Hunter Pocket Watch

    Provenance: Fellows

  9. January 9, 1929 · Sale

    Omega Hunting-Cased Pocket Watch with Portrait of Ras Tafari: original sale recorded

    Recorded by Antiquorum

  10. circa 1930 · Catalogued piece

    Omega Observatory Chronometer Calibre 60.8

    Provenance: Auktionen Dr. Crott

  11. circa 1952 · Catalogued piece

    Omega Caliber 30T2SC Wristwatch in Dennison Case

    Provenance: Second Hand Horology

  12. 1970 · Catalogued piece

    Omega Electronic f300Hz Chronometer Watch CD 198.001

    Provenance: Second Hand Horology

Current watchmaking & later fate

  • As of 1998, Omega is a subsidiary of the Swatch Group, and it maintains its headquarters in Biel/Bienne, Switzerland.
  • The company operates a global network of over 350 boutiques as of 2024.
  • Current product lines include the Constellation, Seamaster, Speedmaster, and De Ville collections.

As stated in the references listed under Sources, retrieved 2026-10-27. Ownership and collections change; check the maker's own announcements for the latest position.

Key models

Speedmaster
The Speedmaster chronograph was first introduced in 1957 and later became known as the first watch worn on the Moon.
Seamaster
Introduced in 1948, the Seamaster is the longest-running product line produced by Omega, originally inspired by designs for the British Royal Navy.
Seamaster Railmaster
First launched in 1957, the Railmaster is a modernized take on the original antimagnetic watch designed for those working near magnetic fields.
Seamaster Ploprof 1200m
Originally launched in 1969, the Ploprof 1200m continues the company's line of heavy-duty tool watches for deep underwater use.

Major innovations

  • The 1894 Omega calibre with fully interchangeable parts and setting from the crown
  • Co-axial escapement production from the late 1990s
  • The Omega 19-line calibre, introduced in 1894, featured a system of total production control that ensured interchangeable parts.

Known markings

  • 'Omega Watch Co.' and the Ω symbol
  • Calibre number inside the movement
  • Reference number inside the case back
  • The brand name Omega was officially registered on March 10, 1894.

Serial numbers

Movement serial numbers correspond to published approximate production years, and the company archive can issue extracts for individual watches.

Collecting significance

Reference, calibre, dial originality and case sharpness dominate; redialled and service-replaced parts are common on much-used models.

In the object catalogue

178 catalogued objects are recorded under Omega. Attributions are as given by each source and are not independent authentication.

  • Front view of the 33mm Omega manual-winding wristwatch showing cream dial, Arabic numerals, and orange seconds hand
  • Frontal view of the Omega Seamaster Aqua Terra 150M showing the teak-concept dial, orange seconds hand, and steel bracelet
  • Dial and front view of the Omega Louis Brandt 18k gold automatic chronograph
  • Three-quarter front view of the Omega Seamaster 1000m ref. 166.093 showing black dial, orange hand, bezel, and mesh bracelet
  • Front view of the Omega Electronic f300Hz wristwatch showing champagne dial and bracelet
  • Front view of Omega military issue wristwatch Ref. CK 2777-1 on a grey fabric strap
Show 166 more

Browse all 178 in the object catalogue

Provenance

Where the 178 catalogued pieces by Omega were recorded, with the collectors, owners and sales their records name.

Provenance map

Each piece is linked to the museum, auction house or dealer whose record it comes from, and to any other house or collection its own provenance names. Select a name to see its pieces.

Museums · 3 pieces

Auction houses · 77 pieces

Dealers & other listings · 98 pieces

Antiquorum

Auction house · 25 pieces · Directory entry

  • Omega 18K Gold and Enamel Keyless Dress WatchOpen-face watch · circa 1905 · Record source

    Antiquorum: lot 354

    Open the object record

  • Omega Chronomètre à Tourbillon wristwatchTourbillon watch · Movement 1947, cased 1987 · Record source

    Antiquorum: lot 444

    Open the object record

  • Omega Concealed Dial Wristwatch Ref. 8060Jewellery & cocktail watch · 1960s · Record source

    Antiquorum: lot 351

    Open the object record

  • Omega Constellation Automatic ChronometerAutomatic wristwatch · 1969 · Record source

    Antiquorum: lot 11

    Open the object record

  • Omega Constellation Co-Axial Chronometer Ref. SI14Automatic wristwatch · circa 2010 · Record source

    Antiquorum: lot 210

    Open the object record

  • Omega Constellation Ref. 2852 WristwatchAutomatic wristwatch · late 1950's · Record source

    Antiquorum: lot 22

    Open the object record

  • Omega Constellation Ref. 7190Automatic wristwatch · 1960s · Record source

    Antiquorum: lot 91

    Open the object record

  • Omega Constellation Wall ClockWall clock · circa 2000 · Record source

    Antiquorum: lot 168

    Open the object record

  • Omega Cosmic Collector's Series Number TwoCalendar & moon-phase watch · 2001 · Record source

    Antiquorum: lot 254

    Open the object record

  • Omega De Ville Central Tourbillon No. 11Tourbillon watch · 1994 · Record source

    Antiquorum: lot 49

    Open the object record

  • Omega DeVille Co-Axial Réserve de MarcheAutomatic wristwatch · circa 2002 · Record source

    Antiquorum: lot 67

    Open the object record

  • Omega Hunting-Cased Pocket Watch with Portrait of Ras TafariHunter-case watch · Sold January 9, 1929 · Record source

    Antiquorum: lot 45

    Original sale: January 9, 1929

    Open the object record

  • Omega Izmir-Kasaba Railway Pocket WatchRailroad watch · 1912 · Record source

    Antiquorum: lot 102

    Open the object record

  • Omega Lady's Wristwatch in 18K White Gold with Diamonds, 13 mm x 8 mmJewellery & cocktail watch · 1950s · Record source

    Antiquorum: lot 142

    Open the object record

  • Omega Museum Collection The Pilot's WatchPilot's watch · 2000 · Record source

    Antiquorum: lot 26

    Open the object record

  • Omega Observatory Tourbillon Wrist ChronometerTourbillon watch · 1947 · Record source

    Antiquorum: lot 110

    Open the object record

  • Omega Ref. 145.008 Chronostop SeamasterChronograph · circa 1969 · Record source

    Antiquorum: lot 155

    Open the object record

  • Omega Ref. 743.20 Pocket ChronometerPocket chronometer & deck watch · circa 1905-1908 · Record source

    Antiquorum: lot 167

    Open the object record

  • Omega Seamaster Professional 300m '007' No. 1Diver's watch · 2006 · Record source

    Antiquorum: lot 297

    Open the object record

  • Omega Speedmaster 125 ChronometerChronograph · 1970s · Record source

    Antiquorum: lot 156

    Open the object record

  • Omega Speedmaster Mark IV, Ref. ST 176.009Chronograph · late 1970s · Record source

    Antiquorum: lot 20

    Open the object record

  • Omega Speedmaster Professional Mark IIIChronograph · 1972 · Record source

    Antiquorum: November 13, 1972 · lot 261

    Open the object record

  • Omega Speedmaster Professional Reference 145.022-69Chronograph · circa 1969 · Record source

    Antiquorum: lot 208

    Open the object record

  • Omega Speedmaster Ref. ST 105.002-62 ChronographChronograph · 1963 · Record source

    Antiquorum: lot 326

    Open the object record

  • Omega Wristwatch with Claw LugsHand-wound wristwatch · circa 1940 · Record source

    Antiquorum: lot 331

    Open the object record

Collectors, owners and donors

Auction history

Show 66 more
HouseSale & lotObject
Antiquorumlot 444Omega Chronomètre à Tourbillon wristwatch
Antiquorumlot 351Omega Concealed Dial Wristwatch Ref. 8060
Antiquorumlot 11Omega Constellation Automatic Chronometer
Henry's Auktionshauslot 3173Omega Constellation Chronometer Gents Wristwatch
Watches of Knightsbridge Auctioneerslot 34Omega Constellation Chronometer Wristwatch, Ref. 14381
Antiquorumlot 210Omega Constellation Co-Axial Chronometer Ref. SI14
A.H. Wilkens Auctions & Appraisals Inc.lot 1052Omega Constellation Globemaster Co-Axial Master Chronometer Wristwatch
Dreweattslot 124Omega Constellation Quadra Ref. 7951233 18 Carat Gold Wristwatch
LiveAuctioneers (auction platform)lot 0040Omega Constellation Ref. 2700 SC 18K Yellow Gold Wristwatch
Antiquorumlot 22Omega Constellation Ref. 2852 Wristwatch
Antiquorumlot 91Omega Constellation Ref. 7190
Antiquorumlot 168Omega Constellation Wall Clock
Invaluable (auction platform)lot 343Omega Cosmic Calendar Wristwatch
Antiquorumlot 254Omega Cosmic Collector's Series Number Two
Bonhams—Omega Cosmic Ref. 2486-2 Wristwatch
Christie'slot 63Omega Cosmic Ref. 2606-8 Triple Calendar Moon-Phase
Antiquorumlot 49Omega De Ville Central Tourbillon No. 11
Mynt Auctionslot 0446GOMEGA De Ville Prestige 424.13.40.20.06.001 Mens Automatic Wristwatch
Dreweattslot 123Omega De Ville Ref. 595.1111 18 Carat Gold Wristwatch
Auktionen Dr. Crottlot 172Omega Decimal-Second Split-Seconds Chronograph Observatory Chronometer
Antiquorumlot 67Omega DeVille Co-Axial Réserve de Marche
Lyon & Turnbulllot 15Omega Dynamic 'Racing Dial' Automatic Wristwatch
Blackwell Auctions LLClot 96Omega Gold Filled Hunter Case Pocket Watch
Invaluable (auction platform)lot 142Omega Hunting Case Pocket Watch
Antiquorumlot 45Omega Hunting-Cased Pocket Watch with Portrait of Ras Tafari
Antiquorumlot 102Omega Izmir-Kasaba Railway Pocket Watch
Antiquorumlot 142Omega Lady's Wristwatch in 18K White Gold with Diamonds, 13 mm x 8 mm
Bidsquare (auction platform)lot 22Omega Lépine Pocket Watch
Dreweattslot 146Omega Mark V Military Open Face Pocket Watch
Bonhamslot 37Omega military issue wristwatch, Ref. CK 2777-1
Dreweattslot 246Omega military wristwatch
Antiquorumlot 26Omega Museum Collection The Pilot's Watch
Auktionen Dr. Crottlot 156Omega Observatory Chronometer Calibre 60.8
Antiquorumlot 110Omega Observatory Tourbillon Wrist Chronometer
LiveAuctioneers (auction platform)lot 0132Omega Open-Face Pocket Watch
Antiquorumlot 155Omega Ref. 145.008 Chronostop Seamaster
Phillipslot 159Omega Ref. 2486-1 "Cosmic" Triple Calendar Wristwatch
Phillipslot 53Omega Ref. 2915-1 Speedmaster "Broad Arrow" Chronograph Wristwatch
Christie'slot 294Omega Ref. 34-62 RCAF Military-Issued Monopusher Chronograph Wristwatch
Dreweattslot 416Omega Ref. 6B/159 Air Ministry RAF Pilot's Watch
Dreweattslot 122Omega Ref. 70832 Lady's 18 Carat Gold Wristwatch
Antiquorumlot 167Omega Ref. 743.20 Pocket Chronometer
Harrington's Auctionslot 61Omega Royal Canadian Airforce Men's Watch
Phillipslot 937Omega Seamaster 1000 Prototype
Blenheim Auctionslot 8Omega Seamaster 300 'Big Triangle' diver's wristwatch, reference 165.024
Phillipslot 123Omega Seamaster 300 “Military”, Ref. ST 165.024
Auktionen Dr. Crottlot 470Omega Seamaster 300 Master Co-Axial Wristwatch
Adam'slot 54Omega Seamaster Chronograph Ref. 145.006-66
Adam's—Omega Seamaster Planet Ocean Chronograph Ref. 168.1652
Antiquorumlot 297Omega Seamaster Professional 300m '007' No. 1
Elstob Auctioneerslot 518Omega Seamaster Professional Co-Axial Chronometer James Bond Limited Edition
the-saleroom (auction platform)lot 379Omega Seamaster Ref. 165.002 automatic wristwatch
Auktionen Dr. Crottlot 342Omega Seamaster XVI Melbourne Olympic Games Wristwatch
Antiquorumlot 156Omega Speedmaster 125 Chronometer
Woolley & Wallislot 1192Omega Speedmaster Chronograph Wristwatch, Ref. 145.022 78
Antiquorumlot 20Omega Speedmaster Mark IV, Ref. ST 176.009
Bonhamslot 153Omega Speedmaster Moonphase Ref. 304.30.44.52.01.001
Tennants—Omega Speedmaster Professional 'Eyes on the Stars' Snoopy Award Chronograph Wristwatch
AntiquorumNovember 13, 1972 · lot 261Omega Speedmaster Professional Mark III
Adam's—Omega Speedmaster Professional Ref. 145/345.0808
Antiquorumlot 208Omega Speedmaster Professional Reference 145.022-69
Antiquorumlot 326Omega Speedmaster Ref. ST 105.002-62 Chronograph
Bonhamslot 359Omega Watches salesman's wooden case
Antiquorumlot 331Omega Wristwatch with Claw Lugs
Hindmanlot 7Omega x Swatch Bioceramic MoonSwatch ‘Mission to the Sun’ Chronograph Wristwatch
Mebane Antique Auctionlot 49Peter Diehl Kaiserslautern Omega Open Face Pocket Watch

Each line is copied from the object's source record and is not independently verified. Holders are as recorded when the piece was catalogued: museum objects may not be on display, and sold lots have since changed hands.

Photographs

Omega Rose Gold Pocket Watch – C1900
Omega Rose Gold Pocket Watch – C1900 — WatchMuseum.org, © WatchMuseum.org, used with permission. WatchMuseum.org catalogue record
Omega Rose Gold Pocket Watch – C1900
Omega Rose Gold Pocket Watch – C1900 — WatchMuseum.org, © WatchMuseum.org, used with permission. WatchMuseum.org catalogue record
Omega Rose Gold Pocket Watch – C1900
Omega Rose Gold Pocket Watch – C1900 — WatchMuseum.org, © WatchMuseum.org, used with permission. WatchMuseum.org catalogue record
Omega Rose Gold Pocket Watch – C1900
Omega Rose Gold Pocket Watch – C1900 — WatchMuseum.org, © WatchMuseum.org, used with permission. WatchMuseum.org catalogue record
Omega 1900-1
Omega 1900-1 — Hubertl, CC BY-SA 4.0. Wikimedia Commons file page
Omega Pocket Movement | WatchCharts Marketplace
Omega Pocket Movement | WatchCharts Marketplace — WatchCharts Marketplace, Rights pending — source and visual checks completed; permission not yet requested. Web page (marketplace.watchcharts.com)
A 1947 Omega Tourbillon wristwatch prototype housing the Calibre 30 I movement
A 1947 Omega Tourbillon wristwatch prototype housing the Calibre 30 I movement — Phillips, Rights pending — permission not yet requested. Web page (watchpro.com)
Omega Constellation Ref. 2700 SC self-winding wristwatch in 18K yellow gold with a 'pie-pan' dial, circa 1953
Omega Constellation Ref. 2700 SC self-winding wristwatch in 18K yellow gold with a 'pie-pan' dial, circa 1953 — International Art Sale, Rights pending — permission not yet requested. Web page (liveauctioneers.com)

Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.

Sources & references

  1. Omega SA, Wikipedia (English), retrieved 2026-10-27 (text CC BY-SA 4.0)
  2. Omega (entreprise), Wikipedia (French), retrieved 2026-10-27 (text CC BY-SA 4.0)
  3. Omega Seamaster, Wikipedia (English), retrieved 2026-10-27 (text CC BY-SA 4.0)
  4. Omega SA, Wikipedia (German), retrieved 2026-10-27 (text CC BY-SA 4.0)
  5. Omega Speedmaster Professional, Wikipedia (German), retrieved 2026-10-27 (text CC BY-SA 4.0)
  6. Omega Speedmaster, Wikipedia (French), retrieved 2026-10-27 (text CC BY-SA 4.0)
  7. Omega museum and archive publications
  8. Archive extracts confirm production and delivery dates but not later ownership history.

Where sources disagree, the disagreement is stated rather than resolved silently.