Later on in the 1920s the BRM modified the obverse and reverse dies to eliminate the halo or ghosting that resulted - these are large diametre and rather thinnish coins so they were prone to that ghosting with a higher relief portrait of KGV. They lowered the relief and actually made the King's portrait very slightly smaller and it largely eliminated the problem. I have literally hundreds of these coins and it is kind of cool to see the progression of the halo on various pennies of the same dates. I don't have many Heaton or King's Norton pennies but it would be interesting to see if they have the same problem.
