Welcome to the forum HC,
The first shown keris is a nice one, I guess around 1900, not high quality but good, nice and legit. Bali or Lombok I can't say, I think both are possible. You should turn the handle by 180 degree!
The second one has a Javanese Blade, the workmanship of the handle and scabbard is low and I doubt that it's Balinese workmanship, looks Javanese or Madurese to my eyes but I just don't know, mid. 20th century? I've seen similar ones before but I don't know if they are made for selling purpose or for local use.
The third one is very, very nice, I like this blade and the handle as well. Sadly the scabbard is missing, it would be worth it to let made a new one for it. When you mean with "damage" the visible pitting, it's nothing you should bother about!
Regards,
Detlef