Sounds like you are enjoying the hunt but as all have said, this is all damage.
FYI- I don't know if Ragged Perforations (aka "Blow holes") are found on modern zinc cents, but I've never seen one. I'm sure that lack of them on zinc cents has to do with the difference in the production process.
Ragged Clip link: http://www.error-ref.com/ragged-perforations/
Words of encouragement are one of the major food groups. We need to consume them regularly to thrive and grow.