Heavily circulated piece.
Obverse: emperor's head in laurel wreath, to the right, in the rim legend:
IMP NERVACAES AVG P M TR P COS III P P.
Reverse: hands hold the banner of the Legions leaning against the prow of a galley, surrounded by the legend:
CONCORDIA EXERCITVVM.
Silver, diameter 17 x 18 mm, weight 2.96 g, axis 6 h.