I have never seen anything like this. The closest reference I could find was the Seamaster CK 2869. Not sure if this was just thrown together or something really weird that Omega actually made. Please let me know!! I'm new to vintage Omega watches so I really don't know much.
The dial was refinished in a color that Omega never used at the time the watch was new. I can’t tell you much about the rest of the watch, but with a redial like that, I would not be hopeful. Looks good with that NATO band (something else that is not original to the watch), but my guess is that the seller is asking well over the market price as this example is “unique”. I’d look elsewhere. gatorcpa
That is the typical dial colour some Indian vintage watch magicans (let’s stay with that term) use. Their repertoire also include baby blue and lime green... I’d search for a dial/parts watch and have it swapped. With this dial it’s not really original not is it genuine. If you like it of course that’s all it matters. Above is only for full disclosure....