When you say "Seamaster," you think of James Bond or a diving watch. Yet, the Seamaster is now the oldest line in the Omega catalog, and it began in 1948 as an elegant watch that could withstand water. From these dressy origins to the great divers, the family has expanded without ever losing its understated models, the ones most often encountered among collectors.
1948: A watch born from a centennial
Omega celebrated its 100th anniversary in 1948 and launched a new family that drew on the experience gained during the war, when the brand notably equipped British military personnel. Its distinctive feature: a rubber O-ring gasket between the case and the screw-down caseback. This technical detail was the source of the watch's water resistance, which was superior to that of many military watches of the era.
It is sometimes said that the Seamaster was created for the London Olympic Games that same year. Official sources only mention the centenary, so we stick to that.
These first Seamasters measured approximately 34 mm, in steel or gold-plated, with a sober and legible dial. "Bumper" rotor automatics were among the first movements used. The bumper is an early winding system where the oscillating weight only makes a small arc and bounces off springs, hence the slight shock you sometimes feel on the wrist.
The 1950s: The full-rotor automatic
In the middle of the decade, Omega generalized the 500-series calibers with 360° rotating rotors, which gradually replaced the bumpers. The Seamasters of this period came in Calendar versions, with a date window at 3 o'clock, and in varied finishes: gold dials, gold-plated cases with steel casebacks, and crosshair patterns (a thin crosshair engraved on the dial).
This is also the era when the Seahorse appeared on the casebacks. This emblem was inspired by the sea horse sculptures that adorn the gondolas of Venice. Sources are divided between 1956 and 1958, with the majority citing 1958.
1957: The Seamaster 300 and the trilogy
In 1957, Omega introduced three professional watches: the Railmaster, the Speedmaster, and the Seamaster 300. The latter (reference CK2913) was the first Seamaster diver. It measured approximately 39 mm and featured a rotating bezel, luminous triangular indices, and the "broad arrow" hands, which have since become iconic.
Its name is confusing: the "300" does not correspond to the certified depth, which was set at 200 m. The generally accepted explanation is that Omega's testing equipment could not test any deeper.
In the early 1960s, the Seamaster 300 changed its look: larger case (42 mm), lyre-shaped lugs, and different hands. Sources date this to 1962 or 1964.
The Ranchero, an ephemeral cousin
In 1958, another model appeared, the Ranchero, designed as a versatile, thinner, and more affordable watch. It sold poorly and its production was quickly stopped, which makes it rare today. Collectors call a Ranchero case bearing a Seamaster dial a "Seachero."
The 1960s: Two families, two destinies
Dressy Seamasters continued to sell well alongside the divers. Omega then decided to distinguish them under the De Ville name, which became a line in its own right in the second half of the 1960s.
However, sober hand-wound Seamasters remained in the catalog with various versions.
1970: The Ploprof and the race to the depths
Professional divers were going deeper and deeper, and Omega responded with the Seamaster 600, nicknamed "Ploprof" (for "plongeur professionnel" or professional diver). It required about four years of research, with its case having been patented as early as 1967. The brand tested it with the Comex company and the Cousteau team. It appeared in 1970 according to most sources, 1971 for some. Its massive monobloc case, water-resistant to 600 m, looked like nothing the Seamaster had produced until then.
In the 1970s and 1980s, the quartz crisis pushed Omega to multiply Seamaster variants.
1993: The 300M closes the vintage chapter
In 1993, the Seamaster Professional Diver 300M arrived with a helium escape valve and a wave-pattern dial. Two years later, Pierce Brosnan wore one in GoldenEye. This model closes our vintage period. The Aqua Terra and Planet Ocean models of the 2000s belong to another story.
The story of the Seamaster is that of a family that split in two: on one side, increasingly deep-diving watches, and on the other, dressy and reliable watches, many of which remain accessible today.
How to choose a vintage Seamaster?
When looking at an old Seamaster, start with the dial. It gives the watch its character, and patina is often highly appreciated. It can be seen in the cream or golden hue that has developed over the decades, or in the small spots or stippling that tell its story. A dial that has never been retouched retains this personality, and every piece is different.
Then look at the whole package: an Omega-signed crown, a movement consistent with the reference. You can also date the watch yourself using its serial number visible on the movement with our decoder.
The original crystal has often been replaced during servicing. This is common and takes nothing away from the watch. Sometimes you can find the original crystal.
As for the size, these Seamasters generally measure 33 to 34 mm, sometimes with slightly larger formats, like the Ranchero (36 mm). Their elegance is understated, never ostentatious.
One last precaution: despite the Seamaster's history, these watches are over 60 years old and their gaskets have aged. This is not a deciding factor, but it is better to keep them away from water.
Which vintage Seamasters are available in our shop?
- Seamaster Calendar 2849 1SC, 1956: Automatic caliber 503, 34 mm steel, patinated gold dial, date at 3 o'clock.
- Seamaster Automatic 2846/2848 5SC, 1958: Caliber 501, 34 mm gold-plated case, patinated crosshair dial.
- Seamaster Ranchero 2996 "Stardust", 1959: Manual caliber 284, 36 mm steel, with extract from the Omega archives.
- Seamaster 14384-2SC, 1959: Manual caliber 610 with date, 33 mm steel, cream dial.
- Seamaster 14759 SC-61, 1961: Manual caliber 600, 33 mm steel, stippled cream dial.
Each one is checked and serviced by our watchmaker and guaranteed for 12 months. See all of our vintage Omegas.
Discover all our vintage Omega watches and, more broadly, our full selection of vintage watches, serviced by our watchmaker and covered by a 12-month warranty.