Watch List notes:

BRITISH COINS, William and Mary, Silver Halfcrown, 1689, first conjoined busts right, rev first crowned quartered shield of arms, escutcheon of the Lion of Nassau, caul only frosted with pearls, edge inscribed in raised letters and dated PRIMO (ESC 505; S 3434). Attractively toned, light surface marks and hairlines, otherwise pleasing very fine.
from the David Sellwood collection

Estimate: £600-800