Interesting Example of what I believe to be Die Abrasion Hopefully, pics show well enough. One of those things which gave me some trouible photographing!
That's definitley "grooves" into the die face - from metal flow deterioration or possibly Feeder Finger Damage that a mint worker tried to polish out.
I'm thinking maybe FFD - as they all go one direction (red lines) while the metal flow lines move from the center outwards in a radial pattern (green lines)
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