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WatchCo Omega Seamaster 300 Date, ref. 0555T 166.0324, 1965 — view 1 of 6
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Wristwatches · Wristwatch

WatchCo Omega Seamaster 300 Date, ref. 0555T 166.0324, 1965

DocumentedDocumented from a dealer's listing; attribution and date as stated by the dealer.
Maker / attribution
Omega (maker)
Date
1965
Country of origin
Switzerland
Object type
Wristwatch
Dimensions
Case 41 mm
Stock no.
vws2839
Credit line
Dealer listing, Vintage Watch Specialist (vws2839)
Catalogue title (original)
WatchCo Omega Seamaster 300 Date - Model ref: 0555T 166.0324 - 1965 (English)

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Record summary

Catalogued by Vintage Watch Specialist (dealer), United Kingdom (stock number vws2839), this is a wristwatch by Omega, made in Switzerland, dated 1965. The Atlas places it in the Modern Mechanical Horology period (1945 – 1969) of its Wristwatches collection. Recorded dimensions: Case 41 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 WatchCo Seamaster 300 Purchased Fully Assembled, Model ref: 0555T 166.0324, in Incredible Condition, 1965 In 1957, Omega released a trio of sports watches: the Speedmaster, the Railmaster, and the Seamaster 300. The original Seamaster 300 fit in perfectly with Omega’s trio of sports watches, and remained in production for seven years until it was replaced by a new generation of Seamaster 300 watches. WatchCo used to be an Omega service centre and was able to acquire spare parts from Omega themselves. Realising the desirability of vintage watches like the Seamaster 300, they decided to make use of Omega’s extensive inventory to buy in as many Seamaster 300 parts as they could. They then sold these either as kits or fully assembled Omega Seamaster watches (as we have here), using either new old stock movements or donor movements sourced from vintage watches. There has been a question as to whether these watches are 'fake'. They are not as they are comprised of genuine Omega parts and have actually become rather collectible due to the story behind them. You can find many references to the WatchCo Seamaster online - see more information here . What’s On Offer This watch was purchased fully assembled from WatchCo and is in beautiful NOS condition. You can see from the photos that this watch is in stunning shape and it is even more stunning in the flesh! It looks new, and wears beautifully. The rich black dial is blemish-free with chunky luminous hour pots and corresponding sword hands. There is a subtle date aperture at 3 o'clock and the dial is completed by the Omega, Seamaster and Swiss Made signatures. The caseback boasts the Omega Hippocampus we would expect to see and the bezel is in incredible condition as is the case. This is a very collectable watch and exquisite condition and is a very worthy contender for any collection - any collector with their salt must surely have a Seamaster 300? A unique watch on offer here that has continued to rise in value since its discontinuation, so definitely a potential investment piece with a twist. Additional information Made from Case: Stainless Steel Dial: Black Crystal: Plexiglas Bracelet: NATO Style Technical specifications Winding: Automatic Movement Type: Mechanical Calibre: 562 Jewels: 24 Waterproof: 300m Power reserve: 50hrs Purchase details Condition: Excellent Model Reference: 166.0324 Date of issue: 1965 Dimensions Width (without crown): 41mm Lug width: 20mm Lug height: (lug to lug) 47mm Wrist size: Adjustable

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

Dive and water-resistant watches

Keeping water and dust out of a wristwatch was a long-standing challenge. Rolex's screw-down Oyster case (1926) and Omega's Marine (1932) were landmarks; in the early 1950s Blancpain's Fifty Fathoms and Rolex's Submariner defined the professional dive watch with rotating bezels for timing dives, luminous dials and high water resistance. The ISO 6425 standard (1982) later codified what a 'diver's watch' must do.

Dive watches became icons of post-war design and exploration, and their evolution — helium escape valves, ceramic bezels, saturation-diving depth ratings — records the history of underwater work.

What to look for

  • Unidirectional or bidirectional rotating bezel with minute markings.
  • Screw-down crown and case back; depth rating printed on the dial.
  • Luminous hands and markers (radium before c. 1960, tritium c. 1960–1998, then Super-LumiNova).
  • Reference numbers on the case between the lugs or inside the back.

Dating clues

  • Screw-down Oyster cases: from 1926.
  • Professional dive watches: from 1953.
  • Tritium 'T' marks on dials: c. 1960–1998.

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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