Watch List notes:

William and Mary (1689-94), Halfcrown, 1689 primo, conjoined laureate and draped busts right, rev. second crowned shield, cauls and interior frosted , no pearls (ESC 838 {509}; S.3435), flecked, otherwise a bold fine.
provenance
Gray collection
Spink Numismatic Circular, April 2001, MS0753
Estimate: £150 - £200