Jefferson nickel found when coin roll hunting- is this a struck through coin or another probl
Found this Jefferson nickel while coin roll hunting. It appears to me to be struck through. The obverse is rather flat and the reverse is kind of concave like a Bowl. There is no visible date and it doesn't appear to have any PMD from what I can see. I'd appreciate if anyone has an opinion and could possibly identify the actual problem and cause that created this nickel.
Any idea what might be the cause of the blue spot on the obverse of the nickel?
These pictures show a higher magnification of the nickel.
The long black spot is between the back of the neck and the hair braid.
USN & USAF retired 1971-1993
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