However, examination shows a series of striated raised lines on both the obverse and reverse of the coin in question. This lines are that of a coin that has been chemically (or electrolysis) stripped of the copper layer.

The black arrows indicate the raised portions seen on the reverse of this coin. These lines are not to be confused with gas bubbles that are common in the copper plated with zinc core cents. Gas bubbled cannot form where there is no layer between metals.

A 1995 Lincoln cent that was stripped of its copper plating after it left the Mint.