A customer brought this into my LCS and I took a look at it. It appeared to be authentic with some light wear, although the edges seemed smoothed.
Weight 7.4 grams
diameter 20 millimeters


The inscriptions read:
IMP TRAIANO AVG GER DAC P M TRP COS VI P P
and
S P Q R OPTIMO PRINCIPI
However, I cannot find an aureus matching this. I don't even know what the figure on the reverse is supposed to be.
Any assistance to this puzzle would be appreciated.