If it's a 25988000, which it looks like it is, they typically have a Cal. 1164, but knowing the serial number I can hopefully confirm exactly what that specific watch came with. Odd that Omega didn't know which movement it should be though - did you send it right to an Omega service center? I would love to see a photo of the movement - the movement caliber is written on the main plate by the balance wheel, and also on the rotor itself.
Note that the red accents on these dials are very prone to fading, as are the hands. If I look at the picture it looks to me like the small triangular markers around the dial are faded, but still have a tiny bit of red on them, and the hands are also faded. That is not an originality issue, but a simple condition issue. I replace dials and hands that are faded all the time - it's a sign that the dial is a real one in many ways!
Cheers, Al
Click to expand...