Watch List notes:

BRITISH COINS, Charles I, halfcrown, Oxford mint, mm. plume/rosette, 1643, Briot's horseman l., brandishing sword which breaks inner circle, Oxford plume behind, ground below, legend reads CAROLLVS, rev. Declaration in two lines, reading PR with letter O added, three equal-sized plumes above, date and OX below, wt. 14.89gms. (S.2957; N.2416/2422; Brooker 893-95, same obv. die, rev. die as Brooker 899), weakly struck on king and horse, toned, good very fine
*ex Maish, Sotheby's, 22 March 1918, lot 335
*ex Spink sale 11009, 22 June 2011, lot 744
With old tickets.

Estimate: £750-850