Hello, i have this Omega in 18k gold from 1930, is this a redial ? I have concern with the 25 index that is too long.

 

I think it is a redial. No Swiss markings and fonts appear too thick and off. I could be wrong they are far more knowledgeable members here to answer this.

 

I read that lot of Omega gold case from this era where made in us, so swiss movement but no swiss made.

 

Without holding it in hand it's hard to tell for sure but I would lean to it being a legit factory dial from the photo.
It looks pretty cool either way

 

Not entirely sure on this one. However, if it's a redial, it looks pretty good I would say.

 

The lug pins are interesting, I haven't seen many Omega watches that take female spring-bars. I would be interested to see more information about the case.

 

IMO its fine - forget the 25-marker... this is often seen (low or no QC at that time)

 

Vintage is a minefield. This is why over the years I learned in my situation best stick with modern.

 

Thank you very much - so more left for us...

 

Here the back case

 

Enjoy

 

18 carat case dating to approximately 1943/1945. Case was made for Omega by Vuilliomenet &Cie SA in Biel/Bienne.

 

Thanks, the serial number on the R17.8 indicate 1939

 

All good. Movement number can be early 1940's . Enjoy. Nice example.

 

Nice looking movement.
Probably needs a service though (regulator set to fully advanced?).

 

Already done originally buy in non working condition to restore and sell but i think i will Keep it.

 

Thank you, i believed that we could tell the exact year of manufacture with the serial number, it is not so ?

 

The R17.8 15P was introduced in 1940 and continued up to 1961.
So, as @gatorcpa noted, serial numbers could vary by two (or more) years if referring to internet lists.

My serial number references show the 9 million serials starting in 1936 and even being used in low production items up until 1950.

An extract from Omega archives could confirm the actual movement production date if in fact, they kept records of movements shipped to the UK during that period, but I don't know if they have those records.