That is the copper core showing. Quarters are made with a
copper core clad with copper/nickel.
Can't tell by photo but it may have been exposed to acid
which ate away part of the core.
A clear photo of the edge would be required to say for sure.
copper core clad with copper/nickel.
Can't tell by photo but it may have been exposed to acid
which ate away part of the core.
A clear photo of the edge would be required to say for sure.






















