1639-40 Charles I, type 4, mm. Star over triangle Halfcrown
Charles I (1625-49), Tower mint under the king (1625-42) Halfcrown, type 4, foreshortened horse CAROLVS D G MAG BR FR ET HI REX. Rev. Oval garnished shield CHRISTO AVSPICE REGNO, mm. Star/ Star over Triangle (1639-40) (S.2779;N.2211;Bull -)
Good Fine/ Very Fine. A new variety of this overmark discovered after the publication of “The halfcrowns of Charles I”. Presumably very rare.