On the edge ARGENT.
Obverse scratched.
Obverse: Dunkirk crest surmounted by a warrior holding saber and ribbon, carried on a wyvern
Reverse: an inscription in six lines, surrounded by a floral wreath
CAISSE / D'EPARGNE / DE DUNKERQUE / FONDÉE LE / 1ER 9BRE / 1833
Dimensions 35 x 35 mm, weight 20.46 g