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Omega Oversized Steel Dress Watch Guilloche Dial Breguet numerals Ref 2505-30, 1947 — view 1 of 6
View 1 of 6 · Image: Bulang & Sons · original image source (opens another website in a new tab)

Wristwatches · Wristwatch

Omega Oversized Steel Dress Watch Guilloche Dial Breguet numerals Ref 2505-30, 1947

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Omega (maker)
Date
1947
Country of origin
Switzerland
Object type
Wristwatch
Materials / technique
steel
Dimensions
Case 38 mm
Stock no.
W-2662
Credit line
Dealer listing, Bulang & Sons (W-2662)
Catalogue title (original)
Omega Oversized Steel Dress Watch Guilloche Dial Breguet numerals Ref 2505-30 (English)

View the source record (dealer listing) ↗ (opens another website in a new tab)Suggest a correction

Record summary

Catalogued by Bulang & Sons (dealer), Copenhagen (stock number W-2662), this is a wristwatch by Omega, made in Switzerland, dated 1947. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. Materials and techniques recorded by the source: steel. Recorded dimensions: Case 38 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 — Bulang & Sons

These early oversized Omegas continue to be some of the best value and cool watches that we offer to you guys. They are not as easy to find as they used to be, so grab this one quick because it’s a beauty. This one has a stunning guilloche dial with large sub seconds and insanely cool applied Breguet hours. This is a stunner! The 38mm steel case is in superb condition. The dial is incredible with guilloche finish, a cartouche where the Omega logo is placed and applied Breguet quarter numerals and hands in rose gold. This is maybe one of the coolest example we have ever seen! To fully set-off this lovely watch we have fitted one of our leather straps. The watch is driven by a red gilded manual wind movement calibre 265 that has been fully serviced by our watchmaker. These watches have always been a big love of ours. Get in touch and let us share our passion with you! Specifications: - Omega 2505-30 - Serial 117xxxxx Dates to 1947 - 38mm steel case - Guilloche dial with Breguet quarter hours - Small seconds - No lume dauphine hands - Calibre 265 manual wind movement - Comes on pictured Bulang and Sons strap - Fully serviced by our watchmaker - Includes a handmade leather watch pouch

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

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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