Watch List notes:

COMMEMORATIVE MEDALS, World Medals, Netherlands, William III (1650-1702), later King of England, 1689, Silver Commemorative Medal, 1657, by Gurian Pool, obv child bust right wearing plumed hat, rev legend in eight lines below cord, 31.12g, 48mm (vL II, 423/409). Choice extremely fine and rare.
Following the Peace of Westminster, the Act of Seclusion forbade the Dutch to appoint any member of the House of Orange a Stadtholder. William was finally appointed in the "Disaster Year" of 1672.

Estimate: £2000-3000