Omega R17.8SC Caliber ID & Dating, 1940s WWII Era

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Homer02

·Apr 25, 2026

I believe it is a R17.8SC caliber in a press in case, but what year is it from. And this is the only example I have found with this type of case.
Anybody knows if it is a legitimate WWII watch?

Thanks

 

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Dan S

·Apr 25, 2026

1940s from the case serial. But if you want more accuracy, post the movement serial.

 

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gatorcpa

·Apr 25, 2026·ΩF InvestiGator

Looks like a Ref. 2327. Not sure what is meant by “legitimate WWII watch”. It was probably made during the war years, but I do not believe it was an issued watch.
gatorcpa

 

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Homer02

·Apr 26, 2026

Dan S

1940s from the case serial. But if you want more accuracy, post the movement serial.

Serial # 9718989

 

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Homer02

·Apr 26, 2026

gatorcpa

Looks like a Ref. 2327. Not sure what is meant by “legitimate WWII watch”. It was probably made during the war years, but I do not believe it was an issued watch.
gatorcpa

Yeah, I don't think it was military issue, but I think it's from the same time. Just curious, and also wanted to find resources to check for such things.

 

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gatorcpa

·Apr 26, 2026·ΩF InvestiGator

Homer02

Just curious, and also wanted to find resources to check for such things.

https://www.emmywatch.com/db/serial/omega/?num=9718989

gatorcpa

 

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Dan S

·Apr 26, 2026

Homer02

Yeah, I don't think it was military issue, but I think it's from the same time. Just curious, and also wanted to find resources to check for such things.

https://omegaforums.net/threads/omega-serial-numbers-on-watches.91390/

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Endshake

·Apr 26, 2026