Under the loupe it appears that the plating has not been broken. It does look like that center ring could be an adhesive of some kind so maybe something was stuck on the coin protecting that area from environmental damage?
"Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas
Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254
Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCL
Struck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burr
Floating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978
Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254
Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCL
Struck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burr
Floating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978























