I noticed this feature and was wondering what caused it? I thought at first it was a clash but it doesn't seem to fit with the reverse details. Thank you!
The anomaly is picking up highlights and creating shadowes in the same orientation as the motto , so they are die related. More than likely they are abrasion lines from removing a clash
That is not what caused said anomalies. As stoneman said, they're mint made, be it from "die maintenance" or whatever (I'm not sure of the exact cause).