Watch List notes:

NETHERLANDS. William I, 1815-1840. Ducat (Gold, 20,5 mm, 3.50 g, 12 h), Russian imitation, St. Petersburg, 1831. CONCORDIA RES PARVAE CRESCUNT Knight standing right, holding sword and bundle of arrows. Rev. MO AUR / REG BELGII / AD LEGEM / IMPERII in four lines within cartouche. Friedberg 331. KM 50.2. Extremely fine.