2 1/2 Gulden - Willem III

Willem III's 2½ Gulden series launched in 1849, the same year he ascended the throne following his father Willem II's sudden death from erysipelas. The Dutch were in the middle of a significant constitutional overhaul — Thorbecke's liberal reforms had just reshaped the monarchy into a genuinely parliamentary system, and these coins entered circulation in a country that had fundamentally changed its political structure within the preceding twelve months.

The .945 fineness was unusually high for a European circulation silver of this size and period, a holdover from Dutch monetary conservatism that would persist until the Latin Monetary Union pressures of the 1870s finally forced reconsideration of the standard.