Watch List notes:

BRITISH COINS, George IV, Silver Halfcrown, 1823, laureate head left, B.P. below, rev second crowned quartered shield of arms, an escutcheon of the Arms of Hanover, within collar of the Order of the Garter and garter motto, date below, edge milled (ESC 636; S 3808). A few tiny digs to obverse field and other light marks, very fine / good very fine, toned.
from the David Sellwood collection

Estimate: £100-150