Netherlands 1 Ducat 1818 William I(1815-1840). Averse: Standing armored knight divides date. Averse Legend: CONCORDIA RES. - PARVAE CRESCUNT. Reverse: Inscription within ornamented square: MO.AUR./REG.BELGII/AD LEGEM/IMPERII. Edge Description: Slant-reeded. Gold. KM 50