Watch List notes:

BRITISH COINS, George IV, Silver Halfcrown, 1824, laureate head left, B.P. below, rev second crowned quartered shield of arms, an escutcheon of the Arms of Hanover, within Order of the Garter and garter motto, date below, edge milled (ESC 636; S 3808). Lightly toned, one or two hairlines, good very fine, reverse better.
from the David Sellwood collection

Estimate: £300-400