Just another coin suffering from environmental damage. I would suggest reading up on what the main types of error/die varieties actually are. It will save you a lot of time to not have to wonder whether every dinged up coin you encounter might be an error.
Just extreme Environmental Damage. PSD. Not an error coin. I would say it's time to read up on actual errors/varieties. All of the coins you've posted are just damaged coins. Go to this site. http://www.error-ref.com