Help identifying a vintage manual winding Omega

Hi everyone,

I'm pretty new to vintage watches and I would need some help with a piece I'm considering purchasing, in particular identifying both its originality and estimated value.

So, according to the seller this is a piece from 1958 with ref. 2750-5, a so called "Jumbo". However when looking at the mechanism, it's a caliber 269, which was introduced in the 60s, and according to the serial number this watch should be specifically from 1963. My guess is that the case is a replacement, but I could be wrong.

Another thing that bugs me is the fact that, despite doing extensive research, I haven't been able to find another dial that looks like this one, specifically the style of the faceted batons and the 3/9/12 markers. Could we be looking at a heavily modified/refinished dial then? I really couldn't find a model matching this one.

Finally, the seller is asking for 1300€, which I feel is too high (especially given the lack of service history and the non-signed, replacement crown). I would think a fairer price is in the 900-1000€ range.

And that's pretty much it. Do you think this watch is worth buying? Any thoughts and feedback are much appreciated!

Don't think all the pictures were uploaded, here's more:

Dial may be repainted reducing value, good idea to ask before buying

Check here:

Badly redialed

Refinished dial and fair movement

Worth maybe $500

20 years ago. I was selling better than that for $350 with refinished dials

Don't buy it unless the seller did a mistake and the price is 130€.

Thank you all for your feedback! I'll definitely steer away from this one then and go for an original 2743-5 from 1954 😁