There are a few coins that have circular lines from the hubbing that where not polished away fully,they are really neat. Then you have whizzed coins that are (turned into junk) So to try to answer what type of lines we would have to see it.
Die crack/cracks. One starts on a vertical to the right of the M in Unum then connects and continues west to the wing. If that line is raised it is a crack. Might be another in between the D and S
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