Watch List notes:

William III (1694-1702), Halfcrown, 1698 undecimo, first laureate and draped bust right, rev. crowned large shields cruciform, late harp (ESC 1036 {555} [R5]; S.3494), fine, the reverse with some graffiti, extremely rare
Spink Numismatic Circular, December 2004, MS 6119

Estimate: £500.00-£600.00