1950s Omega Seamaster ID Help: Ref. 2846 or 2975?

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Dimont46

·Mar 4, 2026

Hello, I am new to this forum. I have an Omega Seamaster from the 50 which I would like to identify the reference number. On other Omegas I open the case and look at the back of the case but on this model the case is one part and you can only access the movement from the glass. I am not that expert to risk opening the case myself. Photos attached.

Thanks for all your help
Dione

 

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Davidt

·Mar 4, 2026

Are you sure? It looks like a snap back case rather than a front loader.

The mid case kind of looks like a 165.010 but these were screw backs.

 

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gatorcpa

·Mar 4, 2026·ΩF InvestiGator

This looks like a Ref. 2846. I think these had snap-back cases.

https://www.omegawatches.com/en-us/watch-omega-seamaster-omega-ko-2846

However, I don't know if these came with full-steel cases with just a gold bezel. I thought only gold-capped, which would include a full gold top.

You may want to take this one to a watchmaker and ask them to open it up to be sure of what you have.
gatorcpa

 

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lenndon

·Mar 4, 2026

If fully original like that, it is a very cool configuration.

 

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Dan S

·Mar 4, 2026

Great dial on that watch. The bezel is definitely throwing me off.

Here is a 2846. Not sure it's a match, TBH. The OP watch has lugs that merge smoothly into the case.

 

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G___

·Mar 4, 2026

Lovely ! 100% take it to a watchmaker to open.

Before that, reverse image searches may help you with the ref # and other info.

 

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Hijak

·Mar 4, 2026

Very similar to this watch I have...

Cal 562 with 18.8 million serial # Ref. 14763 from ~ 1961. Not sure yours is same Ref. because your Seamaster font seems earlier.

 

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JimInOz

·Mar 4, 2026·Melbourne Australia

Hijak

Not sure yours is same Ref. because your Seamaster font seems earlier and it has a snap back v screw back case.

FIFY
😉

 

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masteroftime

·Mar 4, 2026

Pretty certain this is a 2975. Snap on case back. The desifn transformed into a five digit ref (can’t recall) and the six digit ref. 166.010

https://omegaforums.net/threads/seamaster-2975-3sc-black-crosshair-dial.77577/

Thread 'Seamaster 2975-3SC black & crosshair dial' ·

Hello!

This one just came in the post, from this ebay auction : https://www.ebay.com/itm/Vintage-OM...Swiss-Made-Gents-Wristwatch-W71-/372317657842 . I intend to keep...

S.H. · Jun 12, 2018

 

J

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johnnyk

·Mar 5, 2026

Hijak

Very similar to this watch I have...

Cal 562 with 18.8 million serial # Ref. 14763 from ~ 1961. Not sure yours is same Ref. because your Seamaster font seems earlier.

That dial! 😍