Watch List notes:

William and Mary (1688-94), Halfcrown, 1689 PRIMO, rev. first shield, no frosting, with pearls, edge lettered, 15.03g, 6h (Pywell-Phillips - [cf. 145]; ESC 835 [507]; S.3434), rich cabinet tone overlying lustrous surfaces, near extremely fine, highly desirable thus.
Provenance
The Carlisle Collection
Spink Numismatic Circular, June 1991, no. 3677 - £500
Estimate: £600 - £800