From this auction? The watch doesn't work, no movement photo, the case is beat up, dial has been repainted by someone who recalled from memory how it should look like. If it's a gold case, it's worth whatever the scrap gold value is. I wouldn't even bother.
for that price it's very attractive
You're looking at a beat up case that's not very attractive and a movement that will need a full service. Without a photo of the movement and the case back, hard to tell what to expect. You'll also need to source a crown (probably not that hard) and a dial, the hardest. That dial is repainted, so not the original design that came with the watch.
That one appears to be genuine. But it’s very different from the original watch you were asking about. This one is a quartz movement while the other is a mechanical one ( though I think it’s a fake one too). It will be better if you look around some posts in the forum and see what models you like and then hunt for one in good condition. Looking and learning about the references is half the fun. But I completely get wanting to buy the 1st “omega”. Been there, done that.