George III 1766 Half-Guinea second bust AU55, very rare date

George III (1760-1820),gold Half-Guinea, 1766, second laureate head right, legend GEORGIVS. III DEI. GRATIA., toothed border around rim both sides,rev.crowned quartered shield of arms, date either side of crown, legend M.B.F.ET.H. REX. F.D.B. ET.L.D.S.R.I.A.T ET.E. (Schneider -; Bull EGC 804 R3; MCE 409; S.3732).Toned with some residual brilliance evident in legend, some slight surface marks, has been graded and slabbed by NGC as AU55 and a very rare date.