Unusual Wear Pattern on Billon Tetradrachm

Normally, I would have nothing to do with the Emperor Hadrian, but I did agree with the vendor that the reverse was remarkable. The obverse almost looks like it was some sort of touch piece; I don't recall seeing wear like that, otherwise.
Honors flysis Income beezis Onches nobis Inob keesis
DPOTD
DPOTD
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Comments
Maybe the fields were smoothed when cleaning it. Nice coin though.
Edited because I asked a question that was answered via pm.