I have a 1955D penny that appears to have errors (images below). On the obverse, there is a bright line on Lincolns head that runs through the hair. There is another similar line on his shoulder. Also, behind Lincoln, is a curved indentation that looks like a shadowing of his body. The reverse has deep gouges in a semi-circle pattern on the left side. There are also bright lines similar to the ones on the obverse. Is this possibly an error coin? If so, what kind?
