Isle of Man, George III, First issue, Proof Halfpenny, 1786, edge grained left, 8.22g/6h (Prid. 31A; S 7414 var.). Good extremely fine with some toning, rare £300-£400

This type is listed as 7414a in the third edition (2015) of the Spink catalogue, but omitted from the fourth edition (2020)