Omega Bumper ref. 2576 cal. 342 - something is suspect

Hi Everyone and thanks to all the community for all the infos that this forum is giving to watch enthusiasts and professionals. I've been lurking the forum for a while, but sometimes, for a noob like me, it's very overwhelming, especially the world of vintage watches. Understanding if a watch it's worth considering then is really really complicated. As in this case.
I found an Omega Bumper ref. 2576 cal. 342 on chrono24 (The seller asked 500 eur) but something appear a little bit suspect. The dial is for sure "repainted", what i suspect is that for the repainting was used a fantasy dial. I've doubts also on the hands. What you think?

Another question is: the vintage watches in the private market sections, are all "verified" in a way? Can i buy safely (or almost safely? ) I really would like to pull the trigger for my first omega vintage, but i'm scared

Thanks JimlnOZ

The hunt continues 😁

Hideous redial.