Help identifying this vintage Seamaster

gatorcpa

Late 1940’s Seamsters generally do not have “Seamaster” anywhere on the watch.

They are distinguished by having screw back cases and O-ring seals inside.

The branding was added the the Seamaster line in the early 1950’s and water-resistant snap back cases in the mid-1950’s.
gatorcpa

gatorcpa

Agreed on the introduction date. The “first examples” that you refer to did not have the name on the dial. Here is a picture from a 1950 catalog.

duce

Note that the top watch looks like the modern “1948”, just without the name. Later versions of the same watch had the name on both dial and caseback.

Serial numbers on the nameless Seamaster would be in the low 11 million range. Upper 11M and 12M serial numbers would be from 1950 to 1952. That’s when Omega started to produce the versions with the name on the dial.

I know never to say never with vintage Omega, but I never seen a 1940’s Seamaster with the name on the dial. I have a few other advertisements from that era and none have the name.

If you have one, I would love to see it. Happy to be wrong on something like this.
gatorcpa

OMEGuy

I don't have one, but I've seen them.

I agree that the "regular" production of the "Seamaster" as a brand's icon began in the early 1950s.

But OMEGA did introduce the new model line earlier, in the late 1940s.

Here is an example with "Seamaster" etched on the caseback, dated to 1949.

https://www.chrono24.de/omega/1st-g...-with-caliber-351---1949--id11278814.htm#gref

Bumper

The case is wrong for a seamaster, the lugs are too thin & the snap back on the case is different.
Early Seamasters had beefier lugs & were automatics. This is more similar to something like a 2318 or 2348 case. Besides, it's a redial.

Top 2 in the pic are bumpers, note the shape of the lugs, these are specific to bumpers.

Bottom left is a 1957 2828, cal 470. very similar to the 2846/2848 case shape but smaller at 32mm. Note the "beefy" lugs
Bottom right is a 1951 2576, cal 342. Which along with the 2491, was the same case used for the first Seamasters.

gatorcpa

I have a watch with an 11.5M serial number that was identified as being from 1950 by Omega Museum.

This watch is slightly later than that, probably still 1950. Maybe early 1951. Can’t go by movement dating here, as it’s the cases that make them Seamaster, not the movements.

I think some case references had the engraving at this time and some did not. It’s very hard to identify early Seamsters as they don’t have any branding at the beginning (1948-9).
gatorcpa

Bumper

The case is wrong for a seamaster, the lugs are too thin & the snap back on the case is different.
Early Seamasters had beefier lugs & were automatics. This is more similar to something like a 2318 or 2348 case. Besides, it's a redial.

Top 2 in the pic are bumpers, note the shape of the lugs, these are specific to bumpers.

Bottom left is a 1957 2828, cal 470. very similar to the 2846/2848 case shape but smaller at 32mm. Note the "beefy" lugs
Bottom right is a 1951 2576, cal 342. Which along with the 2491, was the same case used for the first Seamasters.

M Mportes

Would you have some more information about this black dial bumper on the top right (case number, caliber etc)? I couldn't find this specific dial anywhere else! I was considering buying one but gave up because there was not the circle inside the numbers i see on most models. Thx