Is it possible this is a P/D? It was really noticeable when I got loose change back from groceries. Once I got to my car I took these pics.
The mint stopped punching mint marks into individual working dies in 1989 so it's not possible for you coin to be a OMM.
Those aren't "radial flow lines." Not in that starburst pattern they're not. They're too regular to even be polish lines, although that's a closer possibility.
Those lines are definitely Radial flow lines just in a deterioration die state. What does the reverse look like?
Extreme die wear erosion. Just a worn-out die struck coin. The die should have been pulled out of service way before it struck this coin.
Pictures? Please start your own separate thread. What you did is hijack a thread. Your coin and comment has nothing to do with this thread topic.