You can compare to the one of
@bigsom that he had one for sale until October:
https://omegaforums.net/threads/196...iber-156d-reduced-to-2100.81500/#post-1054912
Second one is definitely a redial.
First one is difficult to say. A better photo is needed to be sure.
No serifs in Zenith, the 3s in the subdial look different to the seconds scale.
Personally, I would not buy unless I could see it in the flesh.
But even then it can be difficult. Not long ago, I had a nearly perfect redial in my hands. I just felt that there was something wrong with the dial. So I needed quite a long time to see that it is a redial but it was.
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