Having a hard time find any of these with that kind of index. Thinking about buying it but idk if it's original? Ref 2891 2
I agree with @KingCrouchy I would only pick this up if it were extremely cheap, like under 400USD cheap. The dial is in too poor of condition to be considered attractive (to most people). Crown might be a replacement as well but I cannot be sure with this one image.
Don't buy that at any price. A service would cost more than it's worth and it'll never be anything but ugly. Move on.