I'm new to vintage omega and just acquired this Seamaster DeVille. Case model 166.020 and caliber 563. The serial # is 33XX so dates the watch 1971.
I was wondering if anyone could answer a question about the dial.
It has an unusual textured dial with onyx inset into the markers and there also sigma symbols on either side of the “swiss made” at 6.
Do you think the sigma dial means the dial markers are white gold? I know Rolex, Patek, and others used the sigma to indicate the use of gold on the dials in the early 70s.
I would appreciate any insight.

 

I have seen OM to refer to gold dials on Omega but I'm still kinda new to Gold... Are there hallmarks on the backside of the case on any of the lugs? It would be strange to see a gold dial in a SS case...

Will this thread help you?
https://omegaforums.net/threads/o-swiss-made-o.11729/

 

Pretty much identical to mine. Stunning watches.

Some details in this thread.

https://omegaforums.net/threads/omega-seamaster-deville-and-sigma-dials-in-general.70562/

 

ooof that's nice

 

Stunning congrats, I would have bought that myself without hesitation.

 

That's one hell of a first vintage purchase, I wish my first one had been half as good as that!

 

Oh and dibs if you ever get bored with it!!

 

very helpful...thank you!

 

thank you...my first vintage omega, not first vintage watch...I'v also bought my share of duds!

 

yes identical...not a lot of these out there I gather. thank you for the info!