Watch List notes:

BRITISH COINS, Charles I, Silver Halfcrown, Tower mint under Charles I, group III, type 3a1, king on horseback left with upright sword breaking into legend, sash flowing from waist initial mark bell (1634-1635) both sides, rev quartered oval shield of arms with garnish, 15.14g (N 2209; S 2773). Large scratch from hindquarters of horse to legend, good fine / about very fine and lightly toned.
from the David Sellwood collection

Estimate: £100-150