I searched and searched and can't find a similar configuration online.
I am only able to come with a date only model and not daydate.
I am attaching the few pics that I have received. No inner case back pic unfortunately.
I gather this will be a 14k/ ss combination with a cal. 1021 inside.
Although not a very popular movement I don't see these twotone models come up frequently.
Also any comments on overall condition etc would be greatly appreciated.

 

Maybe 166.0261, cal 1020, 18k gold and stainless steel, 1970-79?

 

Here is what the watch is supposed to be. This one likely has a repurposed movement and refinished dial.

http://omega-constellation-collectors.blogspot.com/2012/10/the-dressiest-of-calibre-1011.html

 

Might it not be a dial variation? I can't imagine not replacing the raised "OMEGA" into its same holes.

I did see a variant like the OP's watch but it was a diamond dial on a solid gold piece.

Tom

 

https://www.ebay.ie/itm/Rare-Omega-...gold-stainless-steel-NOT-PLATED-/292551414003Purchases made through these links may earn this site a commission from the eBay Partner Network

 

I don't believe this watch was offered as a day/date, which is why I noted it.

 

Thank you!!
You are a lifesaver! I kept searching on cal 1021 not realising that this is a cal. 1020 ‍♂

 

Thank you for the reply.
It seems it was indeed like @Noddyman said.
Here is a link.
http://www.maximuswatches.com/2018/06/omega-constellation-gold-dial-gold.html?m=1

Also I got a matching pic from one of Desmond's thesis.

 

What do you folks think of the overall condition of this. I don't have a movement pic currently unfortunately.

 

Looks soft and pretty tired compared to the one in the link above.

 

For what it's worth the caliber 1020 is not a chronometer movement which is why these are not marked CHRONOMETER OFFICIALLY CERTIFIED on the dial.

 

Yes. Indeed. They could have put in 1021 and got it certified.. No?
Strange decision to go with a 1020.