A nice, well-preserved Dutch ducat.
Obverse: knight standing to the right, holding a sword and a bundle of arrows, at his sides the date 17-57, in the rim the legend:
CONCORDIA-RES-PAR-CRES-HOL-;
Reverse: in a frame surrounded by labrys the inscription: MO:ORD:/PROVIN-/FOEDER/BELG-AD/LEG-IMP-;
Gold .986, diameter 22 mm, weight 3.45 g.