It's called a Lamination Error.. a better word for it would be De-Lamination but it's not the norm It's a common occurrence on older Cents especially old Wheat Cents. I collect these and they can fetch maybe a few bucks each Thanks for sharing!
I want to share this webpage with you - http://www.error-ref.com/lamination-error-loss-before-strke/ and - http://www.error-ref.com/lamination-loss-after-strike/
