A nice example of this issue. Coin in Polish grading.
Obverse: bust of the emperor wearing a laurel wreath, with drapery on his left shoulder, to the right, in the rim the legend:
IMP TRAIANO AVG GER DAC P M TR P;
Reverse: Aequitas seated left, holding scales and a horn of plenty, surrounded by legend:
COS V P P SPQR OPTIMO PRINC;
